python: generate Pydantic v2 + typing complete code (#16624)

* python: improve type generation with more specific typing

* Annotate function parameters

* Remove unused imports

* remove unused files

* remove temporary hack

* remove lock file

* fix Annotated import

* support Python 3.7

* Regenerate code with typing-extensions

* Fix setup.py

* More Pydantic v2 compatibility

* depend on pydantic v2

* fix client_echo tests

* fix JSON serialization

* Fix references

* Skip circular dependency tests for now

* Temporarily hide the "float" property

The "float" property aliases the "float" type and completely breaks the
model: all the properties that were "float" now become the type of the
"float" property instead.

* Fix errors

* Import Literal from typing_extensions

* Fix GitHub Action workflows

* Fix Python 3.7 failure

* Fix quotes

* Apply suggestions from code review

* Fix tests

* split model imports from other modules imports

* fix workflow

* Comment the array unique items convertion, remove set translation

* Replace alias usage

.github/workflows/samples-python-pydantic-v1-client-echo-api.yaml

@@ -15,7 +15,7 @@ jobs:
       matrix:
         sample:
           # clients
-          - samples/client/echo_api/python
+          - samples/client/echo_api/python-pydantic-v1/
         python-version:
           - "3.7"
           - "3.8"

.github/workflows/samples-python-pydantic-v1-petstore.yaml

@@ -21,8 +21,8 @@ jobs:
           - "3.10"
           - "3.11"
         sample:
-          - samples/openapi3/client/petstore/python-aiohttp
-          - samples/openapi3/client/petstore/python
+          - samples/openapi3/client/petstore/python-pydantic-v1-aiohttp
+          - samples/openapi3/client/petstore/python-pydantic-v1
     services:
       petstore-api:
         image: swaggerapi/petstore

bin/configs/python-echo-api.yaml

@@ -1,6 +1,6 @@
 generatorName: python
 outputDir: samples/client/echo_api/python
-inputSpec: modules/openapi-generator/src/test/resources/3_0/echo_api.yaml
+inputSpec: modules/openapi-generator/src/test/resources/3_0/python/echo_api.yaml
 templateDir: modules/openapi-generator/src/main/resources/python
 additionalProperties:
   hideGenerationTimestamp: "true"

bin/generate-samples.sh

@@ -53,7 +53,7 @@ if [[ ${#files[@]} -eq 1 && "${files[0]}" != *'*'* ]]; then
     java ${JAVA_OPTS} -jar "$executable" generate -c ${files[0]} ${args[@]}
 else
     echo "Please press CTRL+C to stop or the script will continue in 5 seconds."
-    sleep 5
+    #sleep 5
     if [ ${#files[@]} -eq 0 ]; then
       files=("${root}"/bin/configs/*.yaml)
     fi

modules/openapi-generator/src/main/java/org/openapitools/codegen/CodegenModel.java

@@ -999,6 +999,82 @@ public class CodegenModel implements IJsonSchemaValidationProperties {
         this.hasMultipleTypes = hasMultipleTypes;
     }
 
+    @Override
+    public boolean getIsFloat() {
+        return isFloat;
+    }
+
+    @Override
+    public void setIsFloat(boolean isFloat) {
+        this.isFloat = isFloat;
+    }
+
+    @Override
+    public boolean getIsDouble() {
+        return isDouble;
+    }
+
+    @Override
+    public void setIsDouble(boolean isDouble) {
+        this.isDouble = isDouble;
+    }
+
+    @Override
+    public boolean getIsInteger() {
+        return isInteger;
+    }
+
+    @Override
+    public void setIsInteger(boolean isInteger) {
+        this.isInteger = isInteger;
+    }
+
+    @Override
+    public boolean getIsLong() {
+        return isLong;
+    }
+
+    @Override
+    public void setIsLong(boolean isLong) {
+        this.isLong = isLong;
+    }
+
+    @Override
+    public boolean getIsBinary() {
+        return false;
+    }
+
+    @Override
+    public void setIsBinary(boolean isBinary) {}
+
+    @Override
+    public boolean getIsByteArray() {
+        return false;
+    }
+
+    @Override
+    public void setIsByteArray(boolean isByteArray) {}
+
+    @Override
+    public boolean getIsDecimal() {
+        return isDecimal;
+    }
+
+    @Override
+    public void setIsDecimal(boolean isDecimal) {
+        this.isDecimal = isDecimal;
+    }
+
+    @Override
+    public boolean getIsEnum() {
+        return isEnum;
+    }
+
+    @Override
+    public void setIsEnum(boolean isEnum) {
+        this.isEnum = isEnum;
+    }
+
     @Override
     public boolean equals(Object o) {
         if (this == o) return true;

modules/openapi-generator/src/main/java/org/openapitools/codegen/CodegenParameter.java

@@ -17,9 +17,14 @@
 
 package org.openapitools.codegen;
 
-import io.swagger.v3.oas.models.examples.Example;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.LinkedHashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Objects;
 
-import java.util.*;
+import io.swagger.v3.oas.models.examples.Example;
 
 /**
  * Describes a single operation parameter in the OAS specification.
@@ -997,5 +1002,105 @@ public class CodegenParameter implements IJsonSchemaValidationProperties {
     public void setSchemaIsFromAdditionalProperties(boolean schemaIsFromAdditionalProperties) {
         this.schemaIsFromAdditionalProperties = schemaIsFromAdditionalProperties;
     }
+
+    @Override
+    public String getDataType() {
+        return dataType;
+    }
+
+    @Override
+    public void setDataType(String dataType) {
+        this.dataType = dataType;
+    }
+
+    @Override
+    public boolean getIsFloat() {
+        return isFloat;
+    }
+
+    @Override
+    public void setIsFloat(boolean isFloat) {
+        this.isFloat = isFloat;
+    }
+
+    @Override
+    public boolean getIsDouble() {
+        return isDouble;
+    }
+
+    @Override
+    public void setIsDouble(boolean isDouble) {
+        this.isDouble = isDouble;
+    }
+
+    @Override
+    public boolean getIsInteger() {
+        return isInteger;
+    }
+
+    @Override
+    public void setIsInteger(boolean isInteger) {
+        this.isInteger = isInteger;
+    }
+
+    @Override
+    public boolean getIsLong() {
+        return isLong;
+    }
+
+    @Override
+    public void setIsLong(boolean isLong) {
+        this.isLong = isLong;
+    }
+
+    @Override
+    public boolean getIsBinary() {
+        return isBinary;
+    }
+
+    @Override
+    public void setIsBinary(boolean isBinary) {
+        this.isBinary = isBinary;
+    }
+
+    @Override
+    public boolean getIsByteArray() {
+        return isByteArray;
+    }
+
+    @Override
+    public void setIsByteArray(boolean isByteArray) {
+        this.isByteArray = isByteArray;
+    }
+
+    @Override
+    public boolean getIsDecimal() {
+        return isDecimal;
+    }
+
+    @Override
+    public void setIsDecimal(boolean isDecimal) {
+        this.isDecimal = isDecimal;
+    }
+
+    @Override
+    public boolean getIsUuid() {
+        return isUuid;
+    }
+
+    @Override
+    public void setIsUuid(boolean isUuid) {
+        this.isUuid = isUuid;
+    }
+
+    @Override
+    public boolean getIsEnum() {
+        return isEnum;
+    }
+
+    @Override
+    public void setIsEnum(boolean isEnum) {
+        this.isEnum = isEnum;
+    }
 }
 

modules/openapi-generator/src/main/java/org/openapitools/codegen/CodegenProperty.java

@@ -17,7 +17,12 @@
 
 package org.openapitools.codegen;
 
-import java.util.*;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.LinkedHashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Objects;
 
 public class CodegenProperty implements Cloneable, IJsonSchemaValidationProperties {
     /**
@@ -317,10 +322,18 @@ public class CodegenProperty implements Cloneable, IJsonSchemaValidationProperti
         return dataType;
     }
 
+    /**
+     * @deprecated use {@link #setDataType()} instead.
+     */
+    @Deprecated
     public void setDatatype(String datatype) {
         this.dataType = datatype;
     }
 
+    public void setDataType(String dataType) {
+        this.dataType = dataType;
+    }
+
     public String getDatatypeWithEnum() {
         return datatypeWithEnum;
     }
@@ -1027,6 +1040,76 @@ public class CodegenProperty implements Cloneable, IJsonSchemaValidationProperti
         this.requiredVarsMap = requiredVarsMap;
     }
 
+    @Override
+    public boolean getIsFloat() {
+        return isFloat;
+    }
+
+    @Override
+    public void setIsFloat(boolean isFloat) {
+        this.isFloat = isFloat;
+    }
+
+    @Override
+    public boolean getIsDouble() {
+        return isDouble;
+    }
+
+    @Override
+    public void setIsDouble(boolean isDouble) {
+        this.isDouble = isDouble;
+    }
+
+    @Override
+    public boolean getIsInteger() {
+        return isInteger;
+    }
+
+    @Override
+    public void setIsInteger(boolean isInteger) {
+        this.isInteger = isInteger;
+    }
+
+    @Override
+    public boolean getIsLong() {
+        return isLong;
+    }
+
+    @Override
+    public void setIsLong(boolean isLong) {
+        this.isLong = isLong;
+    }
+
+    @Override
+    public boolean getIsBinary() {
+        return isBinary;
+    }
+
+    @Override
+    public void setIsBinary(boolean isBinary) {
+        this.isBinary = isBinary;
+    }
+
+    @Override
+    public boolean getIsByteArray() {
+        return isByteArray;
+    }
+
+    @Override
+    public void setIsByteArray(boolean isByteArray) {
+        this.isByteArray = isByteArray;
+    }
+
+    @Override
+    public boolean getIsDecimal() {
+        return isDecimal;
+    }
+
+    @Override
+    public void setIsDecimal(boolean isDecimal) {
+        this.isDecimal = isDecimal;
+    }
+
     /**
      * Return true if it's an enum (inline or ref)
      *
@@ -1036,6 +1119,16 @@ public class CodegenProperty implements Cloneable, IJsonSchemaValidationProperti
         return isEnum || isEnumRef;
     }
 
+    @Override
+    public boolean getIsEnum() {
+        return isEnum;
+    }
+
+    @Override
+    public void setIsEnum(boolean isEnum) {
+        this.isEnum = isEnum;
+    }
+
     @Override
     public String toString() {
         final StringBuilder sb = new StringBuilder("CodegenProperty{");

modules/openapi-generator/src/main/java/org/openapitools/codegen/CodegenResponse.java

@@ -542,6 +542,16 @@ public class CodegenResponse implements IJsonSchemaValidationProperties {
         this.hasRequired = hasRequired;
     }
 
+    @Override
+    public boolean getIsUuid() {
+        return isUuid;
+    }
+
+    @Override
+    public void setIsUuid(boolean isUuid) {
+        this.isUuid = isUuid;
+    }
+
     @Override
     public String toString() {
         final StringBuilder sb = new StringBuilder("CodegenResponse{");
@@ -790,4 +800,92 @@ public class CodegenResponse implements IJsonSchemaValidationProperties {
     public void setSchemaIsFromAdditionalProperties(boolean schemaIsFromAdditionalProperties) {
         this.schemaIsFromAdditionalProperties = schemaIsFromAdditionalProperties;
     }
+
+    @Override
+    public String getDataType() {
+        return dataType;
+    }
+
+    @Override
+    public void setDataType(String dataType) {
+        this.dataType = dataType;
+    }
+
+    @Override
+    public boolean getIsFloat() {
+        return isFloat;
+    }
+
+    @Override
+    public void setIsFloat(boolean isFloat) {
+        this.isFloat = isFloat;
+    }
+
+    @Override
+    public boolean getIsDouble() {
+        return isDouble;
+    }
+
+    @Override
+    public void setIsDouble(boolean isDouble) {
+        this.isDouble = isDouble;
+    }
+
+    @Override
+    public boolean getIsInteger() {
+        return isInteger;
+    }
+
+    @Override
+    public void setIsInteger(boolean isInteger) {
+        this.isInteger = isInteger;
+    }
+
+    @Override
+    public boolean getIsLong() {
+        return isLong;
+    }
+
+    @Override
+    public void setIsLong(boolean isLong) {
+        this.isLong = isLong;
+    }
+
+    @Override
+    public boolean getIsBinary() {
+        return isBinary;
+    }
+
+    @Override
+    public void setIsBinary(boolean isBinary) {
+        this.isBinary = isBinary;
+    }
+
+    @Override
+    public boolean getIsByteArray() {
+        return isByteArray;
+    }
+
+    @Override
+    public void setIsByteArray(boolean isByteArray) {
+        this.isByteArray = isByteArray;
+    }
+
+    @Override
+    public boolean getIsDecimal() {
+        return isDecimal;
+    }
+
+    @Override
+    public void setIsDecimal(boolean isDecimal) {
+        this.isDecimal = isDecimal;
+    }
+
+    @Override
+    public boolean getIsEnum() {
+        return false;
+    }
+
+    @Override
+    public void setIsEnum(boolean isEnum) {}
 }

modules/openapi-generator/src/main/java/org/openapitools/codegen/IJsonSchemaValidationProperties.java

@@ -9,11 +9,12 @@ import java.util.Map;
 import java.util.Set;
 import java.util.stream.Stream;
 
-import io.swagger.v3.oas.models.media.Schema;
 import org.openapitools.codegen.meta.FeatureSet;
 import org.openapitools.codegen.meta.features.SchemaSupportFeature;
 import org.openapitools.codegen.utils.ModelUtils;
 
+import io.swagger.v3.oas.models.media.Schema;
+
 public interface IJsonSchemaValidationProperties {
     CodegenProperty getContains();
 
@@ -223,6 +224,46 @@ public interface IJsonSchemaValidationProperties {
 
     String getFormat();
 
+    void setDataType(String dataType);
+
+    String getDataType();
+
+    void setIsFloat(boolean isFloat);
+
+    boolean getIsFloat();
+
+    void setIsDouble(boolean isDouble);
+
+    boolean getIsDouble();
+
+    void setIsInteger(boolean isDouble);
+
+    boolean getIsInteger();
+
+    void setIsLong(boolean isLong);
+
+    boolean getIsLong();
+
+    void setIsBinary(boolean isBinary);
+
+    boolean getIsBinary();
+
+    void setIsByteArray(boolean isByteArray);
+
+    boolean getIsByteArray();
+
+    void setIsDecimal(boolean isDecimal);
+
+    boolean getIsDecimal();
+
+    void setIsUuid(boolean isUuid);
+
+    boolean getIsUuid();
+
+    void setIsEnum(boolean isEnum);
+
+    boolean getIsEnum();
+
     /**
      * Syncs all the schema's type properties into the IJsonSchemaValidationProperties instance
      * for now this only supports types without format information

modules/openapi-generator/src/main/resources/python/api.mustache

@@ -7,9 +7,6 @@ import io
 import warnings
 
 from pydantic import validate_arguments, ValidationError
-{{#asyncio}}
-from typing import overload, Optional, Union, Awaitable
-{{/asyncio}}
 
 {{#imports}}
 {{import}}

modules/openapi-generator/src/main/resources/python/model_anyof.mustache

@@ -6,10 +6,14 @@ import re  # noqa: F401
 {{#vendorExtensions.x-py-datetime-imports}}{{#-first}}from datetime import{{/-first}} {{{.}}}{{^-last}},{{/-last}}{{/vendorExtensions.x-py-datetime-imports}}
 {{#vendorExtensions.x-py-typing-imports}}{{#-first}}from typing import{{/-first}} {{{.}}}{{^-last}},{{/-last}}{{/vendorExtensions.x-py-typing-imports}}
 {{#vendorExtensions.x-py-pydantic-imports}}{{#-first}}from pydantic import{{/-first}} {{{.}}}{{^-last}},{{/-last}}{{/vendorExtensions.x-py-pydantic-imports}}
+{{#vendorExtensions.x-py-other-imports}}
+{{{.}}}
+{{/vendorExtensions.x-py-other-imports}}
 {{#vendorExtensions.x-py-model-imports}}
 {{{.}}}
 {{/vendorExtensions.x-py-model-imports}}
-from typing import Union, Any, List, TYPE_CHECKING
+from typing import Union, Any, List, TYPE_CHECKING, Optional, Dict
+from typing_extensions import Literal
 from pydantic import StrictStr, Field
 
 {{#lambda.uppercase}}{{{classname}}}{{/lambda.uppercase}}_ANY_OF_SCHEMAS = [{{#anyOf}}"{{.}}"{{^-last}}, {{/-last}}{{/anyOf}}]
@@ -24,16 +28,16 @@ class {{classname}}({{#parent}}{{{.}}}{{/parent}}{{^parent}}BaseModel{{/parent}}
     {{vendorExtensions.x-py-name}}: {{{vendorExtensions.x-py-typing}}}
 {{/composedSchemas.anyOf}}
     if TYPE_CHECKING:
-        actual_instance: Union[{{#anyOf}}{{{.}}}{{^-last}}, {{/-last}}{{/anyOf}}]
+        actual_instance: Optional[Union[{{#anyOf}}{{{.}}}{{^-last}}, {{/-last}}{{/anyOf}}]] = None
     else:
-        actual_instance: Any
-    any_of_schemas: List[str] = Field({{#lambda.uppercase}}{{{classname}}}{{/lambda.uppercase}}_ANY_OF_SCHEMAS, const=True)
+        actual_instance: Any = None
+    any_of_schemas: List[str] = Literal[{{#lambda.uppercase}}{{{classname}}}{{/lambda.uppercase}}_ANY_OF_SCHEMAS]
 
     class Config:
         validate_assignment = True
 {{#discriminator}}
 
-    discriminator_value_class_map = {
+    discriminator_value_class_map: Dict[str, str] = {
 {{#children}}
         '{{^vendorExtensions.x-discriminator-value}}{{name}}{{/vendorExtensions.x-discriminator-value}}{{#vendorExtensions.x-discriminator-value}}{{{vendorExtensions.x-discriminator-value}}}{{/vendorExtensions.x-discriminator-value}}': '{{{classname}}}'{{^-last}},{{/-last}}
 {{/children}}
@@ -174,7 +178,10 @@ class {{classname}}({{#parent}}{{{.}}}{{/parent}}{{^parent}}BaseModel{{/parent}}
 
 {{#vendorExtensions.x-py-postponed-model-imports.size}}
 {{#vendorExtensions.x-py-postponed-model-imports}}
+from typing import TYPE_CHECKING
+if TYPE_CHECKING:
     {{{.}}}
+    # TODO: pydantic v2
 {{/vendorExtensions.x-py-postponed-model-imports}}
-{{classname}}.update_forward_refs()
+    # {{classname}}.model_rebuild()
 {{/vendorExtensions.x-py-postponed-model-imports.size}}

modules/openapi-generator/src/main/resources/python/model_generic.mustache

@@ -6,6 +6,9 @@ import json
 {{#vendorExtensions.x-py-datetime-imports}}{{#-first}}from datetime import{{/-first}} {{{.}}}{{^-last}},{{/-last}}{{/vendorExtensions.x-py-datetime-imports}}
 {{#vendorExtensions.x-py-typing-imports}}{{#-first}}from typing import{{/-first}} {{{.}}}{{^-last}},{{/-last}}{{/vendorExtensions.x-py-typing-imports}}
 {{#vendorExtensions.x-py-pydantic-imports}}{{#-first}}from pydantic import{{/-first}} {{{.}}}{{^-last}},{{/-last}}{{/vendorExtensions.x-py-pydantic-imports}}
+{{#vendorExtensions.x-py-other-imports}}
+{{{.}}}
+{{/vendorExtensions.x-py-other-imports}}
 {{#vendorExtensions.x-py-model-imports}}
 {{{.}}}
 {{/vendorExtensions.x-py-model-imports}}
@@ -95,9 +98,9 @@ class {{classname}}({{#parent}}{{{.}}}{{/parent}}{{^parent}}BaseModel{{/parent}}
     @classmethod
     def get_discriminator_value(cls, obj: dict) -> str:
         """Returns the discriminator value (object type) of the data"""
-        discriminator_value = obj[cls.__discriminator_property_name]
+        discriminator_value = obj[cls.__discriminator_property_name.default]
         if discriminator_value:
-            return cls.__discriminator_value_class_map.get(discriminator_value)
+            return cls.__discriminator_value_class_map.default.get(discriminator_value)
         else:
             return None
     {{/-last}}
@@ -111,6 +114,7 @@ class {{classname}}({{#parent}}{{{.}}}{{/parent}}{{^parent}}BaseModel{{/parent}}
 
     def to_json(self) -> str:
         """Returns the JSON representation of the model using alias"""
+        # TODO: pydantic v2: use .model_dump_json(by_alias=True, exclude_unset=True) instead
         return json.dumps(self.to_dict())
 
     @classmethod
@@ -227,8 +231,8 @@ class {{classname}}({{#parent}}{{{.}}}{{/parent}}{{^parent}}BaseModel{{/parent}}
             return klass.from_dict(obj)
         else:
             raise ValueError("{{{classname}}} failed to lookup discriminator value from " +
-                             json.dumps(obj) + ". Discriminator property name: " + cls.__discriminator_property_name +
-                             ", mapping: " + json.dumps(cls.__discriminator_value_class_map))
+                             json.dumps(obj) + ". Discriminator property name: " + cls.__discriminator_property_name.default +
+                             ", mapping: " + json.dumps(cls.__discriminator_value_class_map.default))
         {{/discriminator}}
         {{/hasChildren}}
         {{^hasChildren}}
@@ -253,10 +257,10 @@ class {{classname}}({{#parent}}{{{.}}}{{/parent}}{{^parent}}BaseModel{{/parent}}
             {{#isArray}}
             {{#items.isArray}}
             {{#items.items.isPrimitiveType}}
-            "{{{name}}}": obj.get("{{{baseName}}}"){{^-last}},{{/-last}}
+            "{{{baseName}}}": obj.get("{{{baseName}}}"){{^-last}},{{/-last}}
             {{/items.items.isPrimitiveType}}
             {{^items.items.isPrimitiveType}}
-            "{{{name}}}": [
+            "{{{baseName}}}": [
                     [{{{items.items.dataType}}}.from_dict(_inner_item) for _inner_item in _item]
                     for _item in obj.get("{{{baseName}}}")
                 ] if obj.get("{{{baseName}}}") is not None else None{{^-last}},{{/-last}}
@@ -265,14 +269,14 @@ class {{classname}}({{#parent}}{{{.}}}{{/parent}}{{^parent}}BaseModel{{/parent}}
             {{^items.isArray}}
             {{^items.isPrimitiveType}}
             {{#items.isEnumOrRef}}
-            "{{{name}}}": obj.get("{{{baseName}}}"){{^-last}},{{/-last}}
+            "{{{baseName}}}": obj.get("{{{baseName}}}"){{^-last}},{{/-last}}
             {{/items.isEnumOrRef}}
             {{^items.isEnumOrRef}}
-            "{{{name}}}": [{{{items.dataType}}}.from_dict(_item) for _item in obj.get("{{{baseName}}}")] if obj.get("{{{baseName}}}") is not None else None{{^-last}},{{/-last}}
+            "{{{baseName}}}": [{{{items.dataType}}}.from_dict(_item) for _item in obj.get("{{{baseName}}}")] if obj.get("{{{baseName}}}") is not None else None{{^-last}},{{/-last}}
             {{/items.isEnumOrRef}}
             {{/items.isPrimitiveType}}
             {{#items.isPrimitiveType}}
-            "{{{name}}}": obj.get("{{{baseName}}}"){{^-last}},{{/-last}}
+            "{{{baseName}}}": obj.get("{{{baseName}}}"){{^-last}},{{/-last}}
             {{/items.isPrimitiveType}}
             {{/items.isArray}}
             {{/isArray}}
@@ -281,7 +285,7 @@ class {{classname}}({{#parent}}{{{.}}}{{/parent}}{{^parent}}BaseModel{{/parent}}
             {{^items.isEnumOrRef}}
             {{#items.isContainer}}
             {{#items.isMap}}
-            "{{{name}}}": dict(
+            "{{{baseName}}}": dict(
                 (_k, dict(
                     (_ik, {{{items.items.dataType}}}.from_dict(_iv))
                         for _ik, _iv in _v.items()
@@ -295,7 +299,7 @@ class {{classname}}({{#parent}}{{{.}}}{{/parent}}{{^parent}}BaseModel{{/parent}}
             else None{{^-last}},{{/-last}}
             {{/items.isMap}}
             {{#items.isArray}}
-            "{{{name}}}": dict(
+            "{{{baseName}}}": dict(
                 (_k,
                         [{{{items.items.dataType}}}.from_dict(_item) for _item in _v]
                         if _v is not None
@@ -306,7 +310,7 @@ class {{classname}}({{#parent}}{{{.}}}{{/parent}}{{^parent}}BaseModel{{/parent}}
             {{/items.isArray}}
             {{/items.isContainer}}
             {{^items.isContainer}}
-            "{{{name}}}": dict(
+            "{{{baseName}}}": dict(
                 (_k, {{{items.dataType}}}.from_dict(_v))
                 for _k, _v in obj.get("{{{baseName}}}").items()
             )
@@ -315,29 +319,29 @@ class {{classname}}({{#parent}}{{{.}}}{{/parent}}{{^parent}}BaseModel{{/parent}}
             {{/items.isContainer}}
             {{/items.isEnumOrRef}}
             {{#items.isEnumOrRef}}
-            "{{{name}}}": dict((_k, _v) for _k, _v in obj.get("{{{baseName}}}").items()){{^-last}},{{/-last}}
+            "{{{baseName}}}": dict((_k, _v) for _k, _v in obj.get("{{{baseName}}}").items()){{^-last}},{{/-last}}
             {{/items.isEnumOrRef}}
             {{/items.isPrimitiveType}}
             {{#items.isPrimitiveType}}
-            "{{{name}}}": obj.get("{{{baseName}}}"){{^-last}},{{/-last}}
+            "{{{baseName}}}": obj.get("{{{baseName}}}"){{^-last}},{{/-last}}
             {{/items.isPrimitiveType}}
             {{/isMap}}
             {{/isContainer}}
             {{^isContainer}}
             {{^isPrimitiveType}}
             {{^isEnumOrRef}}
-            "{{{name}}}": {{{dataType}}}.from_dict(obj.get("{{{baseName}}}")) if obj.get("{{{baseName}}}") is not None else None{{^-last}},{{/-last}}
+            "{{{baseName}}}": {{{dataType}}}.from_dict(obj.get("{{{baseName}}}")) if obj.get("{{{baseName}}}") is not None else None{{^-last}},{{/-last}}
             {{/isEnumOrRef}}
             {{#isEnumOrRef}}
-            "{{{name}}}": obj.get("{{{baseName}}}"){{^-last}},{{/-last}}
+            "{{{baseName}}}": obj.get("{{{baseName}}}"){{^-last}},{{/-last}}
             {{/isEnumOrRef}}
             {{/isPrimitiveType}}
             {{#isPrimitiveType}}
             {{#defaultValue}}
-            "{{{name}}}": obj.get("{{{baseName}}}") if obj.get("{{{baseName}}}") is not None else {{{defaultValue}}}{{^-last}},{{/-last}}
+            "{{{baseName}}}": obj.get("{{{baseName}}}") if obj.get("{{{baseName}}}") is not None else {{{defaultValue}}}{{^-last}},{{/-last}}
             {{/defaultValue}}
             {{^defaultValue}}
-            "{{{name}}}": obj.get("{{{baseName}}}"){{^-last}},{{/-last}}
+            "{{{baseName}}}": obj.get("{{{baseName}}}"){{^-last}},{{/-last}}
             {{/defaultValue}}
             {{/isPrimitiveType}}
             {{/isContainer}}
@@ -346,7 +350,7 @@ class {{classname}}({{#parent}}{{{.}}}{{/parent}}{{^parent}}BaseModel{{/parent}}
         {{#isAdditionalPropertiesTrue}}
         # store additional fields in additional_properties
         for _key in obj.keys():
-            if _key not in cls.__properties:
+            if _key not in cls.__properties.default:
                 _obj.additional_properties[_key] = obj.get(_key)
 
         {{/isAdditionalPropertiesTrue}}
@@ -357,5 +361,9 @@ class {{classname}}({{#parent}}{{{.}}}{{/parent}}{{^parent}}BaseModel{{/parent}}
 {{#vendorExtensions.x-py-postponed-model-imports}}
 {{{.}}}
 {{/vendorExtensions.x-py-postponed-model-imports}}
-{{classname}}.update_forward_refs()
+from typing import TYPE_CHECKING
+if TYPE_CHECKING:
+    # TODO: pydantic v2
+    # {{classname}}.model_rebuild()
+    pass
 {{/vendorExtensions.x-py-postponed-model-imports.size}}

modules/openapi-generator/src/main/resources/python/model_oneof.mustache

@@ -6,10 +6,14 @@ import re  # noqa: F401
 {{#vendorExtensions.x-py-datetime-imports}}{{#-first}}from datetime import{{/-first}} {{{.}}}{{^-last}},{{/-last}}{{/vendorExtensions.x-py-datetime-imports}}
 {{#vendorExtensions.x-py-typing-imports}}{{#-first}}from typing import{{/-first}} {{{.}}}{{^-last}},{{/-last}}{{/vendorExtensions.x-py-typing-imports}}
 {{#vendorExtensions.x-py-pydantic-imports}}{{#-first}}from pydantic import{{/-first}} {{{.}}}{{^-last}},{{/-last}}{{/vendorExtensions.x-py-pydantic-imports}}
+{{#vendorExtensions.x-py-other-imports}}
+{{{.}}}
+{{/vendorExtensions.x-py-other-imports}}
 {{#vendorExtensions.x-py-model-imports}}
 {{{.}}}
 {{/vendorExtensions.x-py-model-imports}}
-from typing import Union, Any, List, TYPE_CHECKING
+from typing import Union, Any, List, TYPE_CHECKING, Optional, Dict
+from typing_extensions import Literal
 from pydantic import StrictStr, Field
 
 {{#lambda.uppercase}}{{{classname}}}{{/lambda.uppercase}}_ONE_OF_SCHEMAS = [{{#oneOf}}"{{.}}"{{^-last}}, {{/-last}}{{/oneOf}}]
@@ -22,17 +26,14 @@ class {{classname}}({{#parent}}{{{.}}}{{/parent}}{{^parent}}BaseModel{{/parent}}
     # data type: {{{dataType}}}
     {{vendorExtensions.x-py-name}}: {{{vendorExtensions.x-py-typing}}}
 {{/composedSchemas.oneOf}}
-    if TYPE_CHECKING:
-        actual_instance: Union[{{#oneOf}}{{{.}}}{{^-last}}, {{/-last}}{{/oneOf}}]
-    else:
-        actual_instance: Any
-    one_of_schemas: List[str] = Field({{#lambda.uppercase}}{{{classname}}}{{/lambda.uppercase}}_ONE_OF_SCHEMAS, const=True)
+    actual_instance: Optional[Union[{{#oneOf}}{{{.}}}{{^-last}}, {{/-last}}{{/oneOf}}]] = None
+    one_of_schemas: List[str] = Literal[{{#lambda.uppercase}}{{{classname}}}{{/lambda.uppercase}}_ONE_OF_SCHEMAS]
 
     class Config:
         validate_assignment = True
 {{#discriminator}}
 
-    discriminator_value_class_map = {
+    discriminator_value_class_map: Dict[str, str] = {
 {{#children}}
         '{{^vendorExtensions.x-discriminator-value}}{{name}}{{/vendorExtensions.x-discriminator-value}}{{#vendorExtensions.x-discriminator-value}}{{{vendorExtensions.x-discriminator-value}}}{{/vendorExtensions.x-discriminator-value}}': '{{{classname}}}'{{^-last}},{{/-last}}
 {{/children}}
@@ -200,7 +201,10 @@ class {{classname}}({{#parent}}{{{.}}}{{/parent}}{{^parent}}BaseModel{{/parent}}
 
 {{#vendorExtensions.x-py-postponed-model-imports.size}}
 {{#vendorExtensions.x-py-postponed-model-imports}}
+from typing import TYPE_CHECKING
+if TYPE_CHECKING:
     {{{.}}}
+    # TODO: pydantic v2
 {{/vendorExtensions.x-py-postponed-model-imports}}
-{{classname}}.update_forward_refs()
+    # {{classname}}.model_rebuild()
 {{/vendorExtensions.x-py-postponed-model-imports.size}}

modules/openapi-generator/src/main/resources/python/pyproject.mustache

@@ -24,8 +24,9 @@ tornado = ">=4.2,<5"
 pem = ">= 19.3.0"
 pycryptodome = ">= 3.9.0"
 {{/hasHttpSignatureMethods}}
-pydantic = "^1.10.5, <2"
+pydantic = ">=2"
 aenum = ">=3.1.11"
+typing-extensions = ">=4.7.1"
 
 [tool.poetry.dev-dependencies]
 pytest = ">=7.2.1"

modules/openapi-generator/src/main/resources/python/requirements.mustache

@@ -1,8 +1,9 @@
 python_dateutil >= 2.5.3
 setuptools >= 21.0.0
 urllib3 >= 1.25.3, < 2.1.0
-pydantic >= 1.10.5, < 2
+pydantic >= 2
 aenum >= 3.1.11
+typing-extensions >= 4.7.1
 {{#asyncio}}
 aiohttp >= 3.0.0
 {{/asyncio}}

modules/openapi-generator/src/main/resources/python/setup.mustache

@@ -29,8 +29,9 @@ REQUIRES = [
     "pem>=19.3.0",
     "pycryptodome>=3.9.0",
 {{/hasHttpSignatureMethods}}
-    "pydantic >= 1.10.5, < 2",
-    "aenum"
+    "pydantic >= 2",
+    "aenum",
+    "typing-extensions >= 4.7.1",
 ]
 
 setup(

modules/openapi-generator/src/test/resources/3_0/python/echo_api.yaml

@@ -0,0 +1,700 @@
+#
+# Copyright 2018 OpenAPI-Generator Contributors (https://openapi-generator.tech)
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+openapi: 3.0.3
+info:
+  title: Echo Server API
+  description: Echo Server API
+  contact:
+    email: team@openapitools.org
+  license:
+    name: Apache 2.0
+    url: http://www.apache.org/licenses/LICENSE-2.0.html
+  version: 0.1.0
+servers:
+  - url: http://localhost:3000/
+paths:
+  # Path usually starts with parameter type such as path, query, header, form
+  # For body/form parameters, path starts with "/echo" so the the echo server
+  # will response with the same body in the HTTP request.
+  #
+  # path parameter tests
+  /path/string/{path_string}/integer/{path_integer}:
+    get:
+      tags:
+        - path 
+      summary: Test path parameter(s)
+      description: Test path parameter(s)
+      operationId: tests/path/string/{path_string}/integer/{path_integer}
+      parameters:
+      - in: path 
+        name: path_string
+        required: true
+        schema:
+          type: string
+      - in: path 
+        name: path_integer
+        required: true
+        schema:
+          type: integer 
+      responses:
+        '200':
+          description: Successful operation
+          content:
+            text/plain:
+              schema:
+                type: string
+  # form parameter tests
+  /form/integer/boolean/string:
+    post:
+      tags:
+        - form
+      summary: Test form parameter(s)
+      description: Test form parameter(s)
+      operationId: test/form/integer/boolean/string
+      requestBody:
+        content:
+          application/x-www-form-urlencoded:
+            schema:
+              type: object
+              properties:
+                integer_form:
+                  type: integer
+                boolean_form:
+                  type: boolean
+                string_form:
+                  type: string
+      responses:
+        '200':
+          description: Successful operation
+          content:
+            text/plain:
+              schema:
+                type: string
+  # form parameter tests for oneOf schema
+  /form/oneof:
+    post:
+      tags:
+        - form
+      summary: Test form parameter(s) for oneOf schema
+      description: Test form parameter(s) for oneOf schema
+      operationId: test/form/oneof
+      requestBody:
+        content:
+          application/x-www-form-urlencoded:
+            schema:
+              type: object
+              oneOf:
+                - type: object
+                  properties:
+                    form1:
+                      type: string
+                    form2:
+                      type: integer
+                - type: object
+                  properties:
+                    form3:
+                      type: string
+                    form4:
+                      type: boolean
+                - $ref: '#/components/schemas/Tag'
+      responses:
+        '200':
+          description: Successful operation
+          content:
+            text/plain:
+              schema:
+                type: string
+  # header parameter tests
+  /header/integer/boolean/string:
+    get:
+      tags:
+        - header
+      summary: Test header parameter(s)
+      description: Test header parameter(s)
+      operationId: test/header/integer/boolean/string
+      parameters:
+      - in: header
+        name: integer_header
+        style: form #default
+        explode: true #default
+        schema:
+          type: integer
+      - in: header
+        name: boolean_header
+        style: form #default
+        explode: true #default
+        schema:
+          type: boolean
+      - in: header
+        name: string_header
+        style: form #default
+        explode: true #default
+        schema:
+          type: string
+      responses:
+        '200':
+          description: Successful operation
+          content:
+            text/plain:
+              schema:
+                type: string
+  # query parameter tests
+  /query/enum_ref_string:
+    get:
+      tags:
+        - query
+      summary: Test query parameter(s)
+      description: Test query parameter(s)
+      operationId: test/enum_ref_string
+      parameters:
+      - in: query
+        name: enum_ref_string_query
+        style: form #default
+        explode: true #default
+        schema:
+          $ref: '#/components/schemas/StringEnumRef'
+      responses:
+        '200':
+          description: Successful operation
+          content:
+            text/plain:
+              schema:
+                type: string
+  /query/datetime/date/string:
+    get:
+      tags:
+        - query
+      summary: Test query parameter(s)
+      description: Test query parameter(s)
+      operationId: test/query/datetime/date/string
+      parameters:
+      - in: query
+        name: datetime_query 
+        style: form #default
+        explode: true #default
+        schema:
+          type: string
+          format: date-time
+      - in: query
+        name: date_query 
+        style: form #default
+        explode: true #default
+        schema:
+          type: string
+          format: date
+      - in: query
+        name: string_query 
+        style: form #default
+        explode: true #default
+        schema:
+          type: string
+      responses:
+        '200':
+          description: Successful operation
+          content:
+            text/plain:
+              schema:
+                type: string
+  /query/integer/boolean/string:
+    get:
+      tags:
+        - query
+      summary: Test query parameter(s)
+      description: Test query parameter(s)
+      operationId: test/query/integer/boolean/string
+      parameters:
+      - in: query
+        name: integer_query 
+        style: form #default
+        explode: true #default
+        schema:
+          type: integer
+      - in: query
+        name: boolean_query 
+        style: form #default
+        explode: true #default
+        schema:
+          type: boolean
+      - in: query
+        name: string_query 
+        style: form #default
+        explode: true #default
+        schema:
+          type: string
+      responses:
+        '200':
+          description: Successful operation
+          content:
+            text/plain:
+              schema:
+                type: string
+  /query/style_form/explode_true/array_string:
+    get:
+      tags:
+        - query
+      summary: Test query parameter(s)
+      description: Test query parameter(s)
+      operationId: test/query/style_form/explode_true/array_string
+      parameters:
+      - in: query
+        name: query_object
+        style: form #default
+        explode: true #default
+        schema:
+          type: object
+          properties:
+            values:
+                type: array
+                items:
+                    type: string
+      responses:
+        '200':
+          description: Successful operation
+          content:
+            text/plain:
+              schema:
+                type: string
+  /query/style_form/explode_true/object:
+    get:
+      tags:
+        - query
+      summary: Test query parameter(s)
+      description: Test query parameter(s)
+      operationId: test/query/style_form/explode_true/object
+      parameters:
+      - in: query
+        name: query_object
+        style: form #default
+        explode: true #default
+        schema:
+          $ref: '#/components/schemas/Pet'
+      responses:
+        '200':
+          description: Successful operation
+          content:
+            text/plain:
+              schema:
+                type: string
+  /query/style_form/explode_true/object/allOf:
+    get:
+      tags:
+        - query
+      summary: Test query parameter(s)
+      description: Test query parameter(s)
+      operationId: test/query/style_form/explode_true/object/allOf
+      parameters:
+      - in: query
+        name: query_object
+        style: form #default
+        explode: true #default
+        schema:
+          $ref: '#/components/schemas/DataQuery'
+      responses:
+        '200':
+          description: Successful operation
+          content:
+            text/plain:
+              schema:
+                type: string
+  /query/style_deepObject/explode_true/object:
+    get:
+      tags:
+        - query
+      summary: Test query parameter(s)
+      description: Test query parameter(s)
+      operationId: test/query/style_deepObject/explode_true/object
+      parameters:
+      - in: query
+        name: query_object
+        style: deepObject
+        explode: true #default
+        schema:
+          $ref: '#/components/schemas/Pet'
+      responses:
+        '200':
+          description: Successful operation
+          content:
+            text/plain:
+              schema:
+                type: string
+  /query/style_deepObject/explode_true/object/allOf:
+    get:
+      tags:
+        - query
+      summary: Test query parameter(s)
+      description: Test query parameter(s)
+      operationId: test/query/style_deepObject/explode_true/object/allOf
+      parameters:
+      - in: query
+        name: query_object
+        style: deepObject
+        explode: true #default
+        schema:
+          allOf:
+          - $ref: '#/components/schemas/Bird'
+          - $ref: '#/components/schemas/Category'
+      responses:
+        '200':
+          description: Successful operation
+          content:
+            text/plain:
+              schema:
+                type: string
+  # body parameter tests
+  /body/application/octetstream/binary:
+    post:
+      tags:
+        - body
+      summary: Test body parameter(s)
+      description: Test body parameter(s)
+      operationId: test/body/application/octetstream/binary
+      requestBody:
+        content:
+          application/octet-stream:
+            schema:
+              type: string
+              format: binary
+      responses:
+        '200':
+          description: Successful operation
+          content:
+            text/plain:
+              schema:
+                type: string
+  /echo/body/Pet:
+    post:
+      tags:
+        - body
+      summary: Test body parameter(s)
+      description: Test body parameter(s)
+      operationId: test/echo/body/Pet
+      requestBody:
+        $ref: '#/components/requestBodies/Pet'
+      responses:
+        '200':
+          description: Successful operation
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/Pet'
+  /echo/body/Pet/response_string:
+    post:
+      tags:
+        - body
+      summary: Test empty response body
+      description: Test empty response body
+      operationId: test/echo/body/Pet/response_string
+      requestBody:
+        $ref: '#/components/requestBodies/Pet'
+      responses:
+        '200':
+          description: Successful operation
+          content:
+            text/plain:
+              schema:
+                type: string
+  /echo/body/Tag/response_string:
+    post:
+      tags:
+        - body
+      summary: Test empty json (request body)
+      description: Test empty json (request body)
+      operationId: test/echo/body/Tag/response_string
+      requestBody:
+        $ref: '#/components/requestBodies/Tag'
+      responses:
+        '200':
+          description: Successful operation
+          content:
+            text/plain:
+              schema:
+                type: string
+  /echo/body/FreeFormObject/response_string:
+    post:
+      tags:
+        - body
+      summary: Test free form object
+      description: Test free form object
+      operationId: test/echo/body/FreeFormObject/response_string
+      requestBody:
+        content:
+          application/json:
+            schema:
+              type: object
+        description: Free form object
+      responses:
+        '200':
+          description: Successful operation
+          content:
+            text/plain:
+              schema:
+                type: string
+  /binary/gif:
+    post:
+      tags:
+        - body
+      summary: Test binary (gif) response body
+      description: Test binary (gif) response body
+      operationId: test/binary/gif
+      responses:
+        '200':
+          description: Successful operation
+          content:
+            image/gif:
+              schema:
+                type: string
+                format: binary
+  # Array of binary in multipart mime tests
+  /body/application/octetstream/array_of_binary:
+    post:
+      tags:
+        - body
+      summary: Test array of binary in multipart mime
+      description: Test array of binary in multipart mime
+      operationId: test/body/multipart/formdata/array_of_binary
+      requestBody:
+        content:
+          multipart/form-data:
+            schema:
+              required:
+                - files
+              type: object
+              properties:
+                files:
+                  type: array
+                  items:
+                    type: string
+                    format: binary
+      responses:
+        '200':
+          description: Successful operation
+          content:
+            text/plain:
+              schema:
+                type: string
+  # To test http basic auth
+  /auth/http/basic:
+    post:
+      tags:
+        - auth
+      security:
+        - http_auth: []
+      summary: To test HTTP basic authentication
+      description: To test HTTP basic authentication
+      operationId: test/auth/http/basic
+      responses:
+        '200':
+          description: Successful operation
+          content:
+            text/plain:
+              schema:
+                type: string
+components:
+  securitySchemes:
+    http_auth:
+      type: http
+      scheme: basic
+  requestBodies:
+    Pet:
+      content:
+        application/json:
+          schema:
+            $ref: '#/components/schemas/Pet'
+      description: Pet object that needs to be added to the store
+    Tag:
+      content:
+        application/json:
+          schema:
+            $ref: '#/components/schemas/Tag'
+      description: Tag object
+  schemas:
+    Category:
+      type: object
+      properties:
+        id:
+          type: integer
+          format: int64
+          example: 1
+        name:
+          type: string
+          example: Dogs
+      xml:
+        name: category
+    Tag:
+      type: object
+      properties:
+        id:
+          type: integer
+          format: int64
+        name:
+          type: string
+      xml:
+        name: tag
+    Pet:
+      required:
+        - name
+        - photoUrls
+      type: object
+      properties:
+        id:
+          type: integer
+          format: int64
+          example: 10
+        name:
+          type: string
+          example: doggie
+        category:
+          $ref: '#/components/schemas/Category'
+        photoUrls:
+          type: array
+          xml:
+            wrapped: true
+          items:
+            type: string
+            xml:
+              name: photoUrl
+        tags:
+          type: array
+          xml:
+            wrapped: true
+          items:
+            $ref: '#/components/schemas/Tag'
+        status:
+          type: string
+          description: pet status in the store
+          enum:
+            - available
+            - pending
+            - sold
+      xml:
+        name: pet
+    StringEnumRef:
+      type: string
+      enum:
+      - success
+      - failure
+      - unclassified
+    DefaultValue:
+      type: object
+      description: to test the default value of properties
+      properties:
+        array_string_enum_ref_default:
+          type: array
+          items:
+            $ref: '#/components/schemas/StringEnumRef'
+          default:
+            - success
+            - failure
+        array_string_enum_default:
+          type: array
+          items:
+            type: string
+            enum:
+            - success
+            - failure
+            - unclassified
+          default:
+            - success
+            - failure
+        array_string_default:
+          type: array
+          items:
+            type: string
+          default:
+            - failure
+            - skipped
+        array_integer_default:
+          type: array
+          items:
+            type: integer 
+          default:
+            - 1 
+            - 3
+        array_string:
+          type: array
+          items:
+            type: string
+        array_string_nullable:
+          nullable: true
+          type: array
+          items:
+            type: string
+        array_string_extension_nullable:
+          x-nullable: true
+          type: array
+          items:
+            type: string
+        string_nullable:
+          type: string
+          nullable: true
+    Bird:
+      type: object
+      properties:
+        size:
+          type: string
+        color:
+          type: string
+    Query:
+      type: object
+      x-parent: true
+      properties:
+        id:
+          type: integer
+          description: Query
+          format: int64
+        outcomes:
+          type: array
+          items:
+            type: string
+            enum:
+            - SUCCESS
+            - FAILURE
+            - SKIPPED
+          default:
+            - SUCCESS
+            - FAILURE
+    DataQuery:
+      allOf:
+      - type: object
+        properties:
+          suffix:
+            type: string
+            description: test suffix
+          text:
+            type: string
+            description: Some text containing white spaces
+            example: "Some text"
+          date:
+            type: string
+            format: date-time
+            description: A date
+      - $ref: '#/components/schemas/Query'
+    NumberPropertiesOnly:
+      type: object
+      properties:
+        number:
+          type: number
+        # TODO: pydantic v2: this field name override the default `float` type
+        # If this property is uncommented, consider removing this file
+        # completely in favor of the parent echo_api.yaml file
+        #float:
+          #type: number
+          #format: float
+        double:
+          type: number
+          format: double
+          minimum: 0.8
+          maximum: 50.2

modules/openapi-generator/src/test/resources/3_0/python/petstore-with-fake-endpoints-models-for-testing.yaml

@@ -1649,11 +1649,12 @@ components:
           maximum: 543.2
           minimum: 32.1
           type: number
-        float:
-          type: number
-          format: float
-          maximum: 987.6
-          minimum: 54.3
+        # TODO: pydantic v2: this field name override the default `float` type
+        #float:
+          #type: number
+          #format: float
+          #maximum: 987.6
+          #minimum: 54.3
         double:
           type: number
           format: double

samples/client/echo_api/python-pydantic-v1/test/test_manual.py

@@ -84,12 +84,14 @@ class TestManual(unittest.TestCase):
     def testNumberPropertiesOnly(self):
         n = openapi_client.NumberPropertiesOnly.from_json('{"number": 123, "float": 456, "double": 34}')
         self.assertEqual(n.number, 123)
-        self.assertEqual(n.float, 456)
+        # TODO: pydantic v2: the "float" property aliases the "float" type in the pydantic v2 generator
+        # self.assertEqual(n.float, 456)
         self.assertEqual(n.double, 34)
 
         n = openapi_client.NumberPropertiesOnly.from_json('{"number": 123.1, "float": 456.2, "double": 34.3}')
         self.assertEqual(n.number, 123.1)
-        self.assertEqual(n.float, 456.2)
+        # TODO: pydantic v2: the "float" property aliases the "float" type in the pydantic v2 generator
+        # self.assertEqual(n.float, 456.2)
         self.assertEqual(n.double, 34.3)
 
     def testApplicatinOctetStreamBinaryBodyParameter(self):

samples/client/echo_api/python/docs/NumberPropertiesOnly.md

@@ -5,7 +5,6 @@
 Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
 **number** | **float** |  | [optional] 
-**float** | **float** |  | [optional] 
 **double** | **float** |  | [optional] 
 
 ## Example

samples/client/echo_api/python/openapi_client/api/body_api.py

@@ -19,10 +19,11 @@ import warnings
 
 from pydantic import validate_arguments, ValidationError
 
+from pydantic import Field
 from typing_extensions import Annotated
-from pydantic import Field, StrictBytes, StrictStr, conlist
+from pydantic import StrictBytes, StrictStr
 
-from typing import Any, Dict, Optional, Union
+from typing import Any, Dict, List, Optional, Union
 
 from openapi_client.models.pet import Pet
 from openapi_client.models.tag import Tag
@@ -332,7 +333,7 @@ class BodyApi:
             _request_auth=_params.get('_request_auth'))
 
     @validate_arguments
-    def test_body_multipart_formdata_array_of_binary(self, files : conlist(Union[StrictBytes, StrictStr]), **kwargs) -> str:  # noqa: E501
+    def test_body_multipart_formdata_array_of_binary(self, files : List[Union[StrictBytes, StrictStr]], **kwargs) -> str:  # noqa: E501
         """Test array of binary in multipart mime  # noqa: E501
 
         Test array of binary in multipart mime  # noqa: E501
@@ -362,7 +363,7 @@ class BodyApi:
         return self.test_body_multipart_formdata_array_of_binary_with_http_info(files, **kwargs)  # noqa: E501
 
     @validate_arguments
-    def test_body_multipart_formdata_array_of_binary_with_http_info(self, files : conlist(Union[StrictBytes, StrictStr]), **kwargs) -> ApiResponse:  # noqa: E501
+    def test_body_multipart_formdata_array_of_binary_with_http_info(self, files : List[Union[StrictBytes, StrictStr]], **kwargs) -> ApiResponse:  # noqa: E501
         """Test array of binary in multipart mime  # noqa: E501
 
         Test array of binary in multipart mime  # noqa: E501

samples/client/echo_api/python/openapi_client/models/bird.py

@@ -41,6 +41,7 @@ class Bird(BaseModel):
 
     def to_json(self) -> str:
         """Returns the JSON representation of the model using alias"""
+        # TODO: pydantic v2: use .model_dump_json(by_alias=True, exclude_unset=True) instead
         return json.dumps(self.to_dict())
 
     @classmethod

samples/client/echo_api/python/openapi_client/models/category.py

@@ -41,6 +41,7 @@ class Category(BaseModel):
 
     def to_json(self) -> str:
         """Returns the JSON representation of the model using alias"""
+        # TODO: pydantic v2: use .model_dump_json(by_alias=True, exclude_unset=True) instead
         return json.dumps(self.to_dict())
 
     @classmethod

samples/client/echo_api/python/openapi_client/models/data_query.py

@@ -20,16 +20,17 @@ import json
 
 from datetime import datetime
 from typing import Optional
-from pydantic import Field, StrictStr
+from pydantic import StrictStr
+from pydantic import Field
 from openapi_client.models.query import Query
 
 class DataQuery(Query):
     """
     DataQuery
     """
-    suffix: Optional[StrictStr] = Field(None, description="test suffix")
-    text: Optional[StrictStr] = Field(None, description="Some text containing white spaces")
-    var_date: Optional[datetime] = Field(None, alias="date", description="A date")
+    suffix: Optional[StrictStr] = Field(default=None, description="test suffix")
+    text: Optional[StrictStr] = Field(default=None, description="Some text containing white spaces")
+    var_date: Optional[datetime] = Field(default=None, description="A date", alias="date")
     __properties = ["id", "outcomes", "suffix", "text", "date"]
 
     class Config:
@@ -43,6 +44,7 @@ class DataQuery(Query):
 
     def to_json(self) -> str:
         """Returns the JSON representation of the model using alias"""
+        # TODO: pydantic v2: use .model_dump_json(by_alias=True, exclude_unset=True) instead
         return json.dumps(self.to_dict())
 
     @classmethod
@@ -72,7 +74,7 @@ class DataQuery(Query):
             "outcomes": obj.get("outcomes"),
             "suffix": obj.get("suffix"),
             "text": obj.get("text"),
-            "var_date": obj.get("date")
+            "date": obj.get("date")
         })
         return _obj
 

samples/client/echo_api/python/openapi_client/models/default_value.py

@@ -20,20 +20,20 @@ import json
 
 
 from typing import List, Optional
-from pydantic import BaseModel, StrictInt, StrictStr, conlist, validator
+from pydantic import BaseModel, StrictInt, StrictStr, validator
 from openapi_client.models.string_enum_ref import StringEnumRef
 
 class DefaultValue(BaseModel):
     """
     to test the default value of properties  # noqa: E501
     """
-    array_string_enum_ref_default: Optional[conlist(StringEnumRef)] = None
-    array_string_enum_default: Optional[conlist(StrictStr)] = None
-    array_string_default: Optional[conlist(StrictStr)] = None
-    array_integer_default: Optional[conlist(StrictInt)] = None
-    array_string: Optional[conlist(StrictStr)] = None
-    array_string_nullable: Optional[conlist(StrictStr)] = None
-    array_string_extension_nullable: Optional[conlist(StrictStr)] = None
+    array_string_enum_ref_default: Optional[List[StringEnumRef]] = None
+    array_string_enum_default: Optional[List[StrictStr]] = None
+    array_string_default: Optional[List[StrictStr]] = None
+    array_integer_default: Optional[List[StrictInt]] = None
+    array_string: Optional[List[StrictStr]] = None
+    array_string_nullable: Optional[List[StrictStr]] = None
+    array_string_extension_nullable: Optional[List[StrictStr]] = None
     string_nullable: Optional[StrictStr] = None
     __properties = ["array_string_enum_ref_default", "array_string_enum_default", "array_string_default", "array_integer_default", "array_string", "array_string_nullable", "array_string_extension_nullable", "string_nullable"]
 
@@ -59,6 +59,7 @@ class DefaultValue(BaseModel):
 
     def to_json(self) -> str:
         """Returns the JSON representation of the model using alias"""
+        # TODO: pydantic v2: use .model_dump_json(by_alias=True, exclude_unset=True) instead
         return json.dumps(self.to_dict())
 
     @classmethod

samples/client/echo_api/python/openapi_client/models/number_properties_only.py

@@ -20,16 +20,17 @@ import json
 
 
 from typing import Optional, Union
-from pydantic import BaseModel, StrictFloat, StrictInt, confloat, conint
+from pydantic import BaseModel, StrictFloat, StrictInt
+from pydantic import Field
+from typing_extensions import Annotated
 
 class NumberPropertiesOnly(BaseModel):
     """
     NumberPropertiesOnly
     """
     number: Optional[Union[StrictFloat, StrictInt]] = None
-    float: Optional[Union[StrictFloat, StrictInt]] = None
-    double: Optional[Union[confloat(le=50.2, ge=0.8, strict=True), conint(le=50, ge=1, strict=True)]] = None
-    __properties = ["number", "float", "double"]
+    double: Optional[Union[Annotated[float, Field(le=50.2, strict=True, ge=0.8)], Annotated[int, Field(le=50, strict=True, ge=1)]]] = None
+    __properties = ["number", "double"]
 
     class Config:
         """Pydantic configuration"""
@@ -42,6 +43,7 @@ class NumberPropertiesOnly(BaseModel):
 
     def to_json(self) -> str:
         """Returns the JSON representation of the model using alias"""
+        # TODO: pydantic v2: use .model_dump_json(by_alias=True, exclude_unset=True) instead
         return json.dumps(self.to_dict())
 
     @classmethod
@@ -68,7 +70,6 @@ class NumberPropertiesOnly(BaseModel):
 
         _obj = NumberPropertiesOnly.parse_obj({
             "number": obj.get("number"),
-            "float": obj.get("float"),
             "double": obj.get("double")
         })
         return _obj

samples/client/echo_api/python/openapi_client/models/pet.py

@@ -20,7 +20,8 @@ import json
 
 
 from typing import List, Optional
-from pydantic import BaseModel, Field, StrictInt, StrictStr, conlist, validator
+from pydantic import BaseModel, StrictInt, StrictStr, validator
+from pydantic import Field
 from openapi_client.models.category import Category
 from openapi_client.models.tag import Tag
 
@@ -29,11 +30,11 @@ class Pet(BaseModel):
     Pet
     """
     id: Optional[StrictInt] = None
-    name: StrictStr = Field(...)
+    name: StrictStr
     category: Optional[Category] = None
-    photo_urls: conlist(StrictStr) = Field(..., alias="photoUrls")
-    tags: Optional[conlist(Tag)] = None
-    status: Optional[StrictStr] = Field(None, description="pet status in the store")
+    photo_urls: List[StrictStr] = Field(alias="photoUrls")
+    tags: Optional[List[Tag]] = None
+    status: Optional[StrictStr] = Field(default=None, description="pet status in the store")
     __properties = ["id", "name", "category", "photoUrls", "tags", "status"]
 
     @validator('status')
@@ -57,6 +58,7 @@ class Pet(BaseModel):
 
     def to_json(self) -> str:
         """Returns the JSON representation of the model using alias"""
+        # TODO: pydantic v2: use .model_dump_json(by_alias=True, exclude_unset=True) instead
         return json.dumps(self.to_dict())
 
     @classmethod
@@ -95,7 +97,7 @@ class Pet(BaseModel):
             "id": obj.get("id"),
             "name": obj.get("name"),
             "category": Category.from_dict(obj.get("category")) if obj.get("category") is not None else None,
-            "photo_urls": obj.get("photoUrls"),
+            "photoUrls": obj.get("photoUrls"),
             "tags": [Tag.from_dict(_item) for _item in obj.get("tags")] if obj.get("tags") is not None else None,
             "status": obj.get("status")
         })

samples/client/echo_api/python/openapi_client/models/query.py

@@ -20,14 +20,15 @@ import json
 
 
 from typing import List, Optional
-from pydantic import BaseModel, Field, StrictInt, StrictStr, conlist, validator
+from pydantic import BaseModel, StrictInt, StrictStr, validator
+from pydantic import Field
 
 class Query(BaseModel):
     """
     Query
     """
-    id: Optional[StrictInt] = Field(None, description="Query")
-    outcomes: Optional[conlist(StrictStr)] = None
+    id: Optional[StrictInt] = Field(default=None, description="Query")
+    outcomes: Optional[List[StrictStr]] = None
     __properties = ["id", "outcomes"]
 
     @validator('outcomes')
@@ -52,6 +53,7 @@ class Query(BaseModel):
 
     def to_json(self) -> str:
         """Returns the JSON representation of the model using alias"""
+        # TODO: pydantic v2: use .model_dump_json(by_alias=True, exclude_unset=True) instead
         return json.dumps(self.to_dict())
 
     @classmethod

samples/client/echo_api/python/openapi_client/models/tag.py

@@ -41,6 +41,7 @@ class Tag(BaseModel):
 
     def to_json(self) -> str:
         """Returns the JSON representation of the model using alias"""
+        # TODO: pydantic v2: use .model_dump_json(by_alias=True, exclude_unset=True) instead
         return json.dumps(self.to_dict())
 
     @classmethod

samples/client/echo_api/python/openapi_client/models/test_query_style_deep_object_explode_true_object_all_of_query_object_parameter.py

@@ -43,6 +43,7 @@ class TestQueryStyleDeepObjectExplodeTrueObjectAllOfQueryObjectParameter(BaseMod
 
     def to_json(self) -> str:
         """Returns the JSON representation of the model using alias"""
+        # TODO: pydantic v2: use .model_dump_json(by_alias=True, exclude_unset=True) instead
         return json.dumps(self.to_dict())
 
     @classmethod

samples/client/echo_api/python/openapi_client/models/test_query_style_form_explode_true_array_string_query_object_parameter.py

@@ -20,13 +20,13 @@ import json
 
 
 from typing import List, Optional
-from pydantic import BaseModel, StrictStr, conlist
+from pydantic import BaseModel, StrictStr
 
 class TestQueryStyleFormExplodeTrueArrayStringQueryObjectParameter(BaseModel):
     """
     TestQueryStyleFormExplodeTrueArrayStringQueryObjectParameter
     """
-    values: Optional[conlist(StrictStr)] = None
+    values: Optional[List[StrictStr]] = None
     __properties = ["values"]
 
     class Config:
@@ -40,6 +40,7 @@ class TestQueryStyleFormExplodeTrueArrayStringQueryObjectParameter(BaseModel):
 
     def to_json(self) -> str:
         """Returns the JSON representation of the model using alias"""
+        # TODO: pydantic v2: use .model_dump_json(by_alias=True, exclude_unset=True) instead
         return json.dumps(self.to_dict())
 
     @classmethod

samples/client/echo_api/python/pyproject.toml

@@ -14,8 +14,9 @@ python = "^3.7"
 
 urllib3 = ">= 1.25.3"
 python-dateutil = ">=2.8.2"
-pydantic = "^1.10.5, <2"
+pydantic = ">=2"
 aenum = ">=3.1.11"
+typing-extensions = ">=4.7.1"
 
 [tool.poetry.dev-dependencies]
 pytest = ">=7.2.1"

samples/client/echo_api/python/requirements.txt

@@ -1,5 +1,6 @@
 python_dateutil >= 2.5.3
 setuptools >= 21.0.0
 urllib3 >= 1.25.3, < 2.1.0
-pydantic >= 1.10.5, < 2
+pydantic >= 2
 aenum >= 3.1.11
+typing-extensions >= 4.7.1

samples/client/echo_api/python/setup.py

@@ -27,8 +27,9 @@ PYTHON_REQUIRES = ">=3.7"
 REQUIRES = [
     "urllib3 >= 1.25.3, < 2.1.0",
     "python-dateutil",
-    "pydantic >= 1.10.5, < 2",
-    "aenum"
+    "pydantic >= 2",
+    "aenum",
+    "typing-extensions >= 4.7.1",
 ]
 
 setup(

samples/client/echo_api/python/test/test_manual.py

@@ -84,12 +84,14 @@ class TestManual(unittest.TestCase):
     def testNumberPropertiesOnly(self):
         n = openapi_client.NumberPropertiesOnly.from_json('{"number": 123, "float": 456, "double": 34}')
         self.assertEqual(n.number, 123)
-        self.assertEqual(n.float, 456)
+        # TODO: pydantic v2: this field name override the default `float` type
+        # self.assertEqual(n.float, 456)
         self.assertEqual(n.double, 34)
 
         n = openapi_client.NumberPropertiesOnly.from_json('{"number": 123.1, "float": 456.2, "double": 34.3}')
         self.assertEqual(n.number, 123.1)
-        self.assertEqual(n.float, 456.2)
+        # TODO: pydantic v2: this field name override the default `float` type
+        # self.assertEqual(n.float, 456.2)
         self.assertEqual(n.double, 34.3)
 
     def testApplicatinOctetStreamBinaryBodyParameter(self):

samples/openapi3/client/petstore/python-aiohttp/docs/FormatTest.md

@@ -8,7 +8,6 @@ Name | Type | Description | Notes
 **int32** | **int** |  | [optional] 
 **int64** | **int** |  | [optional] 
 **number** | **float** |  | 
-**float** | **float** |  | [optional] 
 **double** | **float** |  | [optional] 
 **decimal** | **decimal.Decimal** |  | [optional] 
 **string** | **str** |  | [optional] 

samples/openapi3/client/petstore/python-aiohttp/petstore_api/api/another_fake_api.py

@@ -17,11 +17,9 @@ import io
 import warnings
 
 from pydantic import validate_arguments, ValidationError
-from typing import overload, Optional, Union, Awaitable
 
-from typing_extensions import Annotated
 from pydantic import Field
-
+from typing_extensions import Annotated
 from petstore_api.models.client import Client
 
 from petstore_api.api_client import ApiClient
@@ -45,7 +43,7 @@ class AnotherFakeApi:
         self.api_client = api_client
 
     @validate_arguments
-    async def call_123_test_special_tags(self, client : Annotated[Client, Field(..., description="client model")], **kwargs) -> Client:  # noqa: E501
+    async def call_123_test_special_tags(self, client : Annotated[Client, Field(description="client model")], **kwargs) -> Client:  # noqa: E501
         """To test special tags  # noqa: E501
 
         To test special tags and operation ID starting with number  # noqa: E501
@@ -68,7 +66,7 @@ class AnotherFakeApi:
         return await self.call_123_test_special_tags_with_http_info(client, **kwargs)  # noqa: E501
 
     @validate_arguments
-    async def call_123_test_special_tags_with_http_info(self, client : Annotated[Client, Field(..., description="client model")], **kwargs) -> ApiResponse:  # noqa: E501
+    async def call_123_test_special_tags_with_http_info(self, client : Annotated[Client, Field(description="client model")], **kwargs) -> ApiResponse:  # noqa: E501
         """To test special tags  # noqa: E501
 
         To test special tags and operation ID starting with number  # noqa: E501

samples/openapi3/client/petstore/python-aiohttp/petstore_api/api/default_api.py

@@ -17,7 +17,6 @@ import io
 import warnings
 
 from pydantic import validate_arguments, ValidationError
-from typing import overload, Optional, Union, Awaitable
 
 from petstore_api.models.foo_get_default_response import FooGetDefaultResponse
 

samples/openapi3/client/petstore/python-aiohttp/petstore_api/api/fake_api.py

@@ -17,12 +17,12 @@ import io
 import warnings
 
 from pydantic import validate_arguments, ValidationError
-from typing import overload, Optional, Union, Awaitable
 
+from pydantic import Field
 from typing_extensions import Annotated
 from datetime import date, datetime
 
-from pydantic import Field, StrictBool, StrictBytes, StrictInt, StrictStr, conbytes, confloat, conint, conlist, constr, validator
+from pydantic import StrictBool, StrictBytes, StrictInt, StrictStr, validator
 
 from typing import Any, Dict, List, Optional, Union
 
@@ -411,7 +411,7 @@ class FakeApi:
             _request_auth=_params.get('_request_auth'))
 
     @validate_arguments
-    async def fake_http_signature_test(self, pet : Annotated[Pet, Field(..., description="Pet object that needs to be added to the store")], query_1 : Annotated[Optional[StrictStr], Field(description="query parameter")] = None, header_1 : Annotated[Optional[StrictStr], Field(description="header parameter")] = None, **kwargs) -> None:  # noqa: E501
+    async def fake_http_signature_test(self, pet : Annotated[Pet, Field(description="Pet object that needs to be added to the store")], query_1 : Annotated[Optional[StrictStr], Field(description="query parameter")] = None, header_1 : Annotated[Optional[StrictStr], Field(description="header parameter")] = None, **kwargs) -> None:  # noqa: E501
         """test http signature authentication  # noqa: E501
 
 
@@ -437,7 +437,7 @@ class FakeApi:
         return await self.fake_http_signature_test_with_http_info(pet, query_1, header_1, **kwargs)  # noqa: E501
 
     @validate_arguments
-    async def fake_http_signature_test_with_http_info(self, pet : Annotated[Pet, Field(..., description="Pet object that needs to be added to the store")], query_1 : Annotated[Optional[StrictStr], Field(description="query parameter")] = None, header_1 : Annotated[Optional[StrictStr], Field(description="header parameter")] = None, **kwargs) -> ApiResponse:  # noqa: E501
+    async def fake_http_signature_test_with_http_info(self, pet : Annotated[Pet, Field(description="Pet object that needs to be added to the store")], query_1 : Annotated[Optional[StrictStr], Field(description="query parameter")] = None, header_1 : Annotated[Optional[StrictStr], Field(description="header parameter")] = None, **kwargs) -> ApiResponse:  # noqa: E501
         """test http signature authentication  # noqa: E501
 
 
@@ -1074,7 +1074,7 @@ class FakeApi:
             _request_auth=_params.get('_request_auth'))
 
     @validate_arguments
-    async def fake_property_enum_integer_serialize(self, outer_object_with_enum_property : Annotated[OuterObjectWithEnumProperty, Field(..., description="Input enum (int) as post body")], **kwargs) -> OuterObjectWithEnumProperty:  # noqa: E501
+    async def fake_property_enum_integer_serialize(self, outer_object_with_enum_property : Annotated[OuterObjectWithEnumProperty, Field(description="Input enum (int) as post body")], **kwargs) -> OuterObjectWithEnumProperty:  # noqa: E501
         """fake_property_enum_integer_serialize  # noqa: E501
 
         Test serialization of enum (int) properties with examples  # noqa: E501
@@ -1097,7 +1097,7 @@ class FakeApi:
         return await self.fake_property_enum_integer_serialize_with_http_info(outer_object_with_enum_property, **kwargs)  # noqa: E501
 
     @validate_arguments
-    async def fake_property_enum_integer_serialize_with_http_info(self, outer_object_with_enum_property : Annotated[OuterObjectWithEnumProperty, Field(..., description="Input enum (int) as post body")], **kwargs) -> ApiResponse:  # noqa: E501
+    async def fake_property_enum_integer_serialize_with_http_info(self, outer_object_with_enum_property : Annotated[OuterObjectWithEnumProperty, Field(description="Input enum (int) as post body")], **kwargs) -> ApiResponse:  # noqa: E501
         """fake_property_enum_integer_serialize  # noqa: E501
 
         Test serialization of enum (int) properties with examples  # noqa: E501
@@ -1319,7 +1319,7 @@ class FakeApi:
             _request_auth=_params.get('_request_auth'))
 
     @validate_arguments
-    async def fake_uuid_example(self, uuid_example : Annotated[StrictStr, Field(..., description="uuid example")], **kwargs) -> None:  # noqa: E501
+    async def fake_uuid_example(self, uuid_example : Annotated[StrictStr, Field(description="uuid example")], **kwargs) -> None:  # noqa: E501
         """test uuid example  # noqa: E501
 
 
@@ -1341,7 +1341,7 @@ class FakeApi:
         return await self.fake_uuid_example_with_http_info(uuid_example, **kwargs)  # noqa: E501
 
     @validate_arguments
-    async def fake_uuid_example_with_http_info(self, uuid_example : Annotated[StrictStr, Field(..., description="uuid example")], **kwargs) -> ApiResponse:  # noqa: E501
+    async def fake_uuid_example_with_http_info(self, uuid_example : Annotated[StrictStr, Field(description="uuid example")], **kwargs) -> ApiResponse:  # noqa: E501
         """test uuid example  # noqa: E501
 
 
@@ -1435,7 +1435,7 @@ class FakeApi:
             _request_auth=_params.get('_request_auth'))
 
     @validate_arguments
-    async def test_body_with_binary(self, body : Annotated[Optional[Union[StrictBytes, StrictStr]], Field(..., description="image to upload")], **kwargs) -> None:  # noqa: E501
+    async def test_body_with_binary(self, body : Annotated[Optional[Union[StrictBytes, StrictStr]], Field(description="image to upload")], **kwargs) -> None:  # noqa: E501
         """test_body_with_binary  # noqa: E501
 
         For this test, the body has to be a binary file.  # noqa: E501
@@ -1458,7 +1458,7 @@ class FakeApi:
         return await self.test_body_with_binary_with_http_info(body, **kwargs)  # noqa: E501
 
     @validate_arguments
-    async def test_body_with_binary_with_http_info(self, body : Annotated[Optional[Union[StrictBytes, StrictStr]], Field(..., description="image to upload")], **kwargs) -> ApiResponse:  # noqa: E501
+    async def test_body_with_binary_with_http_info(self, body : Annotated[Optional[Union[StrictBytes, StrictStr]], Field(description="image to upload")], **kwargs) -> ApiResponse:  # noqa: E501
         """test_body_with_binary  # noqa: E501
 
         For this test, the body has to be a binary file.  # noqa: E501
@@ -1821,7 +1821,7 @@ class FakeApi:
             _request_auth=_params.get('_request_auth'))
 
     @validate_arguments
-    async def test_client_model(self, client : Annotated[Client, Field(..., description="client model")], **kwargs) -> Client:  # noqa: E501
+    async def test_client_model(self, client : Annotated[Client, Field(description="client model")], **kwargs) -> Client:  # noqa: E501
         """To test \"client\" model  # noqa: E501
 
         To test \"client\" model  # noqa: E501
@@ -1844,7 +1844,7 @@ class FakeApi:
         return await self.test_client_model_with_http_info(client, **kwargs)  # noqa: E501
 
     @validate_arguments
-    async def test_client_model_with_http_info(self, client : Annotated[Client, Field(..., description="client model")], **kwargs) -> ApiResponse:  # noqa: E501
+    async def test_client_model_with_http_info(self, client : Annotated[Client, Field(description="client model")], **kwargs) -> ApiResponse:  # noqa: E501
         """To test \"client\" model  # noqa: E501
 
         To test \"client\" model  # noqa: E501
@@ -2079,7 +2079,7 @@ class FakeApi:
             _request_auth=_params.get('_request_auth'))
 
     @validate_arguments
-    async def test_endpoint_parameters(self, number : Annotated[confloat(le=543.2, ge=32.1), Field(..., description="None")], double : Annotated[confloat(le=123.4, ge=67.8), Field(..., description="None")], pattern_without_delimiter : Annotated[constr(strict=True), Field(..., description="None")], byte : Annotated[Union[StrictBytes, StrictStr], Field(..., description="None")], integer : Annotated[Optional[conint(strict=True, le=100, ge=10)], Field(description="None")] = None, int32 : Annotated[Optional[conint(strict=True, le=200, ge=20)], Field(description="None")] = None, int64 : Annotated[Optional[StrictInt], Field(description="None")] = None, float : Annotated[Optional[confloat(le=987.6)], Field(description="None")] = None, string : Annotated[Optional[constr(strict=True)], Field(description="None")] = None, binary : Annotated[Optional[Union[StrictBytes, StrictStr]], Field(description="None")] = None, byte_with_max_length : Annotated[Optional[Union[conbytes(strict=True, max_length=64), constr(strict=True, max_length=64)]], Field(description="None")] = None, var_date : Annotated[Optional[date], Field(description="None")] = None, date_time : Annotated[Optional[datetime], Field(description="None")] = None, password : Annotated[Optional[constr(strict=True, max_length=64, min_length=10)], Field(description="None")] = None, param_callback : Annotated[Optional[StrictStr], Field(description="None")] = None, **kwargs) -> None:  # noqa: E501
+    async def test_endpoint_parameters(self, number : Annotated[float, Field(le=543.2, ge=32.1, description="None")], double : Annotated[float, Field(le=123.4, ge=67.8, description="None")], pattern_without_delimiter : Annotated[str, Field(strict=True, description="None")], byte : Annotated[Union[StrictBytes, StrictStr], Field(description="None")], integer : Annotated[Optional[Annotated[int, Field(le=100, strict=True, ge=10)]], Field(description="None")] = None, int32 : Annotated[Optional[Annotated[int, Field(le=200, strict=True, ge=20)]], Field(description="None")] = None, int64 : Annotated[Optional[StrictInt], Field(description="None")] = None, float : Annotated[Optional[Annotated[float, Field(le=987.6)]], Field(description="None")] = None, string : Annotated[Optional[Annotated[str, Field(strict=True)]], Field(description="None")] = None, binary : Annotated[Optional[Union[StrictBytes, StrictStr]], Field(description="None")] = None, byte_with_max_length : Annotated[Optional[Union[Annotated[bytes, Field(strict=True, max_length=64)], Annotated[str, Field(strict=True, max_length=64)]]], Field(description="None")] = None, var_date : Annotated[Optional[date], Field(description="None")] = None, date_time : Annotated[Optional[datetime], Field(description="None")] = None, password : Annotated[Optional[Annotated[str, Field(min_length=10, strict=True, max_length=64)]], Field(description="None")] = None, param_callback : Annotated[Optional[StrictStr], Field(description="None")] = None, **kwargs) -> None:  # noqa: E501
         """Fake endpoint for testing various parameters 假端點 偽のエンドポイント 가짜 엔드 포인트   # noqa: E501
 
         Fake endpoint for testing various parameters 假端點 偽のエンドポイント 가짜 엔드 포인트   # noqa: E501
@@ -2130,7 +2130,7 @@ class FakeApi:
         return await self.test_endpoint_parameters_with_http_info(number, double, pattern_without_delimiter, byte, integer, int32, int64, float, string, binary, byte_with_max_length, var_date, date_time, password, param_callback, **kwargs)  # noqa: E501
 
     @validate_arguments
-    async def test_endpoint_parameters_with_http_info(self, number : Annotated[confloat(le=543.2, ge=32.1), Field(..., description="None")], double : Annotated[confloat(le=123.4, ge=67.8), Field(..., description="None")], pattern_without_delimiter : Annotated[constr(strict=True), Field(..., description="None")], byte : Annotated[Union[StrictBytes, StrictStr], Field(..., description="None")], integer : Annotated[Optional[conint(strict=True, le=100, ge=10)], Field(description="None")] = None, int32 : Annotated[Optional[conint(strict=True, le=200, ge=20)], Field(description="None")] = None, int64 : Annotated[Optional[StrictInt], Field(description="None")] = None, float : Annotated[Optional[confloat(le=987.6)], Field(description="None")] = None, string : Annotated[Optional[constr(strict=True)], Field(description="None")] = None, binary : Annotated[Optional[Union[StrictBytes, StrictStr]], Field(description="None")] = None, byte_with_max_length : Annotated[Optional[Union[conbytes(strict=True, max_length=64), constr(strict=True, max_length=64)]], Field(description="None")] = None, var_date : Annotated[Optional[date], Field(description="None")] = None, date_time : Annotated[Optional[datetime], Field(description="None")] = None, password : Annotated[Optional[constr(strict=True, max_length=64, min_length=10)], Field(description="None")] = None, param_callback : Annotated[Optional[StrictStr], Field(description="None")] = None, **kwargs) -> ApiResponse:  # noqa: E501
+    async def test_endpoint_parameters_with_http_info(self, number : Annotated[float, Field(le=543.2, ge=32.1, description="None")], double : Annotated[float, Field(le=123.4, ge=67.8, description="None")], pattern_without_delimiter : Annotated[str, Field(strict=True, description="None")], byte : Annotated[Union[StrictBytes, StrictStr], Field(description="None")], integer : Annotated[Optional[Annotated[int, Field(le=100, strict=True, ge=10)]], Field(description="None")] = None, int32 : Annotated[Optional[Annotated[int, Field(le=200, strict=True, ge=20)]], Field(description="None")] = None, int64 : Annotated[Optional[StrictInt], Field(description="None")] = None, float : Annotated[Optional[Annotated[float, Field(le=987.6)]], Field(description="None")] = None, string : Annotated[Optional[Annotated[str, Field(strict=True)]], Field(description="None")] = None, binary : Annotated[Optional[Union[StrictBytes, StrictStr]], Field(description="None")] = None, byte_with_max_length : Annotated[Optional[Union[Annotated[bytes, Field(strict=True, max_length=64)], Annotated[str, Field(strict=True, max_length=64)]]], Field(description="None")] = None, var_date : Annotated[Optional[date], Field(description="None")] = None, date_time : Annotated[Optional[datetime], Field(description="None")] = None, password : Annotated[Optional[Annotated[str, Field(min_length=10, strict=True, max_length=64)]], Field(description="None")] = None, param_callback : Annotated[Optional[StrictStr], Field(description="None")] = None, **kwargs) -> ApiResponse:  # noqa: E501
         """Fake endpoint for testing various parameters 假端點 偽のエンドポイント 가짜 엔드 포인트   # noqa: E501
 
         Fake endpoint for testing various parameters 假端點 偽のエンドポイント 가짜 엔드 포인트   # noqa: E501
@@ -2316,7 +2316,7 @@ class FakeApi:
             _request_auth=_params.get('_request_auth'))
 
     @validate_arguments
-    async def test_group_parameters(self, required_string_group : Annotated[StrictInt, Field(..., description="Required String in group parameters")], required_boolean_group : Annotated[StrictBool, Field(..., description="Required Boolean in group parameters")], required_int64_group : Annotated[StrictInt, Field(..., description="Required Integer in group parameters")], string_group : Annotated[Optional[StrictInt], Field(description="String in group parameters")] = None, boolean_group : Annotated[Optional[StrictBool], Field(description="Boolean in group parameters")] = None, int64_group : Annotated[Optional[StrictInt], Field(description="Integer in group parameters")] = None, **kwargs) -> None:  # noqa: E501
+    async def test_group_parameters(self, required_string_group : Annotated[StrictInt, Field(description="Required String in group parameters")], required_boolean_group : Annotated[StrictBool, Field(description="Required Boolean in group parameters")], required_int64_group : Annotated[StrictInt, Field(description="Required Integer in group parameters")], string_group : Annotated[Optional[StrictInt], Field(description="String in group parameters")] = None, boolean_group : Annotated[Optional[StrictBool], Field(description="Boolean in group parameters")] = None, int64_group : Annotated[Optional[StrictInt], Field(description="Integer in group parameters")] = None, **kwargs) -> None:  # noqa: E501
         """Fake endpoint to test group parameters (optional)  # noqa: E501
 
         Fake endpoint to test group parameters (optional)  # noqa: E501
@@ -2349,7 +2349,7 @@ class FakeApi:
         return await self.test_group_parameters_with_http_info(required_string_group, required_boolean_group, required_int64_group, string_group, boolean_group, int64_group, **kwargs)  # noqa: E501
 
     @validate_arguments
-    async def test_group_parameters_with_http_info(self, required_string_group : Annotated[StrictInt, Field(..., description="Required String in group parameters")], required_boolean_group : Annotated[StrictBool, Field(..., description="Required Boolean in group parameters")], required_int64_group : Annotated[StrictInt, Field(..., description="Required Integer in group parameters")], string_group : Annotated[Optional[StrictInt], Field(description="String in group parameters")] = None, boolean_group : Annotated[Optional[StrictBool], Field(description="Boolean in group parameters")] = None, int64_group : Annotated[Optional[StrictInt], Field(description="Integer in group parameters")] = None, **kwargs) -> ApiResponse:  # noqa: E501
+    async def test_group_parameters_with_http_info(self, required_string_group : Annotated[StrictInt, Field(description="Required String in group parameters")], required_boolean_group : Annotated[StrictBool, Field(description="Required Boolean in group parameters")], required_int64_group : Annotated[StrictInt, Field(description="Required Integer in group parameters")], string_group : Annotated[Optional[StrictInt], Field(description="String in group parameters")] = None, boolean_group : Annotated[Optional[StrictBool], Field(description="Boolean in group parameters")] = None, int64_group : Annotated[Optional[StrictInt], Field(description="Integer in group parameters")] = None, **kwargs) -> ApiResponse:  # noqa: E501
         """Fake endpoint to test group parameters (optional)  # noqa: E501
 
         Fake endpoint to test group parameters (optional)  # noqa: E501
@@ -2474,7 +2474,7 @@ class FakeApi:
             _request_auth=_params.get('_request_auth'))
 
     @validate_arguments
-    async def test_inline_additional_properties(self, request_body : Annotated[Dict[str, StrictStr], Field(..., description="request body")], **kwargs) -> None:  # noqa: E501
+    async def test_inline_additional_properties(self, request_body : Annotated[Dict[str, StrictStr], Field(description="request body")], **kwargs) -> None:  # noqa: E501
         """test inline additionalProperties  # noqa: E501
 
           # noqa: E501
@@ -2497,7 +2497,7 @@ class FakeApi:
         return await self.test_inline_additional_properties_with_http_info(request_body, **kwargs)  # noqa: E501
 
     @validate_arguments
-    async def test_inline_additional_properties_with_http_info(self, request_body : Annotated[Dict[str, StrictStr], Field(..., description="request body")], **kwargs) -> ApiResponse:  # noqa: E501
+    async def test_inline_additional_properties_with_http_info(self, request_body : Annotated[Dict[str, StrictStr], Field(description="request body")], **kwargs) -> ApiResponse:  # noqa: E501
         """test inline additionalProperties  # noqa: E501
 
           # noqa: E501
@@ -2599,7 +2599,7 @@ class FakeApi:
             _request_auth=_params.get('_request_auth'))
 
     @validate_arguments
-    async def test_inline_freeform_additional_properties(self, test_inline_freeform_additional_properties_request : Annotated[TestInlineFreeformAdditionalPropertiesRequest, Field(..., description="request body")], **kwargs) -> None:  # noqa: E501
+    async def test_inline_freeform_additional_properties(self, test_inline_freeform_additional_properties_request : Annotated[TestInlineFreeformAdditionalPropertiesRequest, Field(description="request body")], **kwargs) -> None:  # noqa: E501
         """test inline free-form additionalProperties  # noqa: E501
 
           # noqa: E501
@@ -2622,7 +2622,7 @@ class FakeApi:
         return await self.test_inline_freeform_additional_properties_with_http_info(test_inline_freeform_additional_properties_request, **kwargs)  # noqa: E501
 
     @validate_arguments
-    async def test_inline_freeform_additional_properties_with_http_info(self, test_inline_freeform_additional_properties_request : Annotated[TestInlineFreeformAdditionalPropertiesRequest, Field(..., description="request body")], **kwargs) -> ApiResponse:  # noqa: E501
+    async def test_inline_freeform_additional_properties_with_http_info(self, test_inline_freeform_additional_properties_request : Annotated[TestInlineFreeformAdditionalPropertiesRequest, Field(description="request body")], **kwargs) -> ApiResponse:  # noqa: E501
         """test inline free-form additionalProperties  # noqa: E501
 
           # noqa: E501
@@ -2724,7 +2724,7 @@ class FakeApi:
             _request_auth=_params.get('_request_auth'))
 
     @validate_arguments
-    async def test_json_form_data(self, param : Annotated[StrictStr, Field(..., description="field1")], param2 : Annotated[StrictStr, Field(..., description="field2")], **kwargs) -> None:  # noqa: E501
+    async def test_json_form_data(self, param : Annotated[StrictStr, Field(description="field1")], param2 : Annotated[StrictStr, Field(description="field2")], **kwargs) -> None:  # noqa: E501
         """test json serialization of form data  # noqa: E501
 
           # noqa: E501
@@ -2749,7 +2749,7 @@ class FakeApi:
         return await self.test_json_form_data_with_http_info(param, param2, **kwargs)  # noqa: E501
 
     @validate_arguments
-    async def test_json_form_data_with_http_info(self, param : Annotated[StrictStr, Field(..., description="field1")], param2 : Annotated[StrictStr, Field(..., description="field2")], **kwargs) -> ApiResponse:  # noqa: E501
+    async def test_json_form_data_with_http_info(self, param : Annotated[StrictStr, Field(description="field1")], param2 : Annotated[StrictStr, Field(description="field2")], **kwargs) -> ApiResponse:  # noqa: E501
         """test json serialization of form data  # noqa: E501
 
           # noqa: E501
@@ -2857,7 +2857,7 @@ class FakeApi:
             _request_auth=_params.get('_request_auth'))
 
     @validate_arguments
-    async def test_query_parameter_collection_format(self, pipe : conlist(StrictStr), ioutil : conlist(StrictStr), http : conlist(StrictStr), url : conlist(StrictStr), context : conlist(StrictStr), allow_empty : StrictStr, language : Optional[Dict[str, StrictStr]] = None, **kwargs) -> None:  # noqa: E501
+    async def test_query_parameter_collection_format(self, pipe : List[StrictStr], ioutil : List[StrictStr], http : List[StrictStr], url : List[StrictStr], context : List[StrictStr], allow_empty : StrictStr, language : Optional[Dict[str, StrictStr]] = None, **kwargs) -> None:  # noqa: E501
         """test_query_parameter_collection_format  # noqa: E501
 
         To test the collection format in query parameters  # noqa: E501
@@ -2892,7 +2892,7 @@ class FakeApi:
         return await self.test_query_parameter_collection_format_with_http_info(pipe, ioutil, http, url, context, allow_empty, language, **kwargs)  # noqa: E501
 
     @validate_arguments
-    async def test_query_parameter_collection_format_with_http_info(self, pipe : conlist(StrictStr), ioutil : conlist(StrictStr), http : conlist(StrictStr), url : conlist(StrictStr), context : conlist(StrictStr), allow_empty : StrictStr, language : Optional[Dict[str, StrictStr]] = None, **kwargs) -> ApiResponse:  # noqa: E501
+    async def test_query_parameter_collection_format_with_http_info(self, pipe : List[StrictStr], ioutil : List[StrictStr], http : List[StrictStr], url : List[StrictStr], context : List[StrictStr], allow_empty : StrictStr, language : Optional[Dict[str, StrictStr]] = None, **kwargs) -> ApiResponse:  # noqa: E501
         """test_query_parameter_collection_format  # noqa: E501
 
         To test the collection format in query parameters  # noqa: E501

samples/openapi3/client/petstore/python-aiohttp/petstore_api/api/fake_classname_tags123_api.py

@@ -17,11 +17,9 @@ import io
 import warnings
 
 from pydantic import validate_arguments, ValidationError
-from typing import overload, Optional, Union, Awaitable
 
-from typing_extensions import Annotated
 from pydantic import Field
-
+from typing_extensions import Annotated
 from petstore_api.models.client import Client
 
 from petstore_api.api_client import ApiClient
@@ -45,7 +43,7 @@ class FakeClassnameTags123Api:
         self.api_client = api_client
 
     @validate_arguments
-    async def test_classname(self, client : Annotated[Client, Field(..., description="client model")], **kwargs) -> Client:  # noqa: E501
+    async def test_classname(self, client : Annotated[Client, Field(description="client model")], **kwargs) -> Client:  # noqa: E501
         """To test class name in snake case  # noqa: E501
 
         To test class name in snake case  # noqa: E501
@@ -68,7 +66,7 @@ class FakeClassnameTags123Api:
         return await self.test_classname_with_http_info(client, **kwargs)  # noqa: E501
 
     @validate_arguments
-    async def test_classname_with_http_info(self, client : Annotated[Client, Field(..., description="client model")], **kwargs) -> ApiResponse:  # noqa: E501
+    async def test_classname_with_http_info(self, client : Annotated[Client, Field(description="client model")], **kwargs) -> ApiResponse:  # noqa: E501
         """To test class name in snake case  # noqa: E501
 
         To test class name in snake case  # noqa: E501

samples/openapi3/client/petstore/python-aiohttp/petstore_api/api/pet_api.py

@@ -17,10 +17,10 @@ import io
 import warnings
 
 from pydantic import validate_arguments, ValidationError
-from typing import overload, Optional, Union, Awaitable
 
+from pydantic import Field
 from typing_extensions import Annotated
-from pydantic import Field, StrictBytes, StrictInt, StrictStr, conlist, validator
+from pydantic import StrictBytes, StrictInt, StrictStr, validator
 
 from typing import List, Optional, Union
 
@@ -48,7 +48,7 @@ class PetApi:
         self.api_client = api_client
 
     @validate_arguments
-    async def add_pet(self, pet : Annotated[Pet, Field(..., description="Pet object that needs to be added to the store")], **kwargs) -> None:  # noqa: E501
+    async def add_pet(self, pet : Annotated[Pet, Field(description="Pet object that needs to be added to the store")], **kwargs) -> None:  # noqa: E501
         """Add a new pet to the store  # noqa: E501
 
           # noqa: E501
@@ -71,7 +71,7 @@ class PetApi:
         return await self.add_pet_with_http_info(pet, **kwargs)  # noqa: E501
 
     @validate_arguments
-    async def add_pet_with_http_info(self, pet : Annotated[Pet, Field(..., description="Pet object that needs to be added to the store")], **kwargs) -> ApiResponse:  # noqa: E501
+    async def add_pet_with_http_info(self, pet : Annotated[Pet, Field(description="Pet object that needs to be added to the store")], **kwargs) -> ApiResponse:  # noqa: E501
         """Add a new pet to the store  # noqa: E501
 
           # noqa: E501
@@ -173,7 +173,7 @@ class PetApi:
             _request_auth=_params.get('_request_auth'))
 
     @validate_arguments
-    async def delete_pet(self, pet_id : Annotated[StrictInt, Field(..., description="Pet id to delete")], api_key : Optional[StrictStr] = None, **kwargs) -> None:  # noqa: E501
+    async def delete_pet(self, pet_id : Annotated[StrictInt, Field(description="Pet id to delete")], api_key : Optional[StrictStr] = None, **kwargs) -> None:  # noqa: E501
         """Deletes a pet  # noqa: E501
 
           # noqa: E501
@@ -198,7 +198,7 @@ class PetApi:
         return await self.delete_pet_with_http_info(pet_id, api_key, **kwargs)  # noqa: E501
 
     @validate_arguments
-    async def delete_pet_with_http_info(self, pet_id : Annotated[StrictInt, Field(..., description="Pet id to delete")], api_key : Optional[StrictStr] = None, **kwargs) -> ApiResponse:  # noqa: E501
+    async def delete_pet_with_http_info(self, pet_id : Annotated[StrictInt, Field(description="Pet id to delete")], api_key : Optional[StrictStr] = None, **kwargs) -> ApiResponse:  # noqa: E501
         """Deletes a pet  # noqa: E501
 
           # noqa: E501
@@ -299,7 +299,7 @@ class PetApi:
             _request_auth=_params.get('_request_auth'))
 
     @validate_arguments
-    async def find_pets_by_status(self, status : Annotated[conlist(StrictStr), Field(..., description="Status values that need to be considered for filter")], **kwargs) -> List[Pet]:  # noqa: E501
+    async def find_pets_by_status(self, status : Annotated[List[StrictStr], Field(description="Status values that need to be considered for filter")], **kwargs) -> List[Pet]:  # noqa: E501
         """Finds Pets by status  # noqa: E501
 
         Multiple status values can be provided with comma separated strings  # noqa: E501
@@ -322,7 +322,7 @@ class PetApi:
         return await self.find_pets_by_status_with_http_info(status, **kwargs)  # noqa: E501
 
     @validate_arguments
-    async def find_pets_by_status_with_http_info(self, status : Annotated[conlist(StrictStr), Field(..., description="Status values that need to be considered for filter")], **kwargs) -> ApiResponse:  # noqa: E501
+    async def find_pets_by_status_with_http_info(self, status : Annotated[List[StrictStr], Field(description="Status values that need to be considered for filter")], **kwargs) -> ApiResponse:  # noqa: E501
         """Finds Pets by status  # noqa: E501
 
         Multiple status values can be provided with comma separated strings  # noqa: E501
@@ -425,7 +425,7 @@ class PetApi:
             _request_auth=_params.get('_request_auth'))
 
     @validate_arguments
-    async def find_pets_by_tags(self, tags : Annotated[conlist(StrictStr, unique_items=True), Field(..., description="Tags to filter by")], **kwargs) -> List[Pet]:  # noqa: E501
+    async def find_pets_by_tags(self, tags : Annotated[List[StrictStr], Field(description="Tags to filter by")], **kwargs) -> List[Pet]:  # noqa: E501
         """(Deprecated) Finds Pets by tags  # noqa: E501
 
         Multiple tags can be provided with comma separated strings. Use tag1, tag2, tag3 for testing.  # noqa: E501
@@ -448,7 +448,7 @@ class PetApi:
         return await self.find_pets_by_tags_with_http_info(tags, **kwargs)  # noqa: E501
 
     @validate_arguments
-    async def find_pets_by_tags_with_http_info(self, tags : Annotated[conlist(StrictStr, unique_items=True), Field(..., description="Tags to filter by")], **kwargs) -> ApiResponse:  # noqa: E501
+    async def find_pets_by_tags_with_http_info(self, tags : Annotated[List[StrictStr], Field(description="Tags to filter by")], **kwargs) -> ApiResponse:  # noqa: E501
         """(Deprecated) Finds Pets by tags  # noqa: E501
 
         Multiple tags can be provided with comma separated strings. Use tag1, tag2, tag3 for testing.  # noqa: E501
@@ -553,7 +553,7 @@ class PetApi:
             _request_auth=_params.get('_request_auth'))
 
     @validate_arguments
-    async def get_pet_by_id(self, pet_id : Annotated[StrictInt, Field(..., description="ID of pet to return")], **kwargs) -> Pet:  # noqa: E501
+    async def get_pet_by_id(self, pet_id : Annotated[StrictInt, Field(description="ID of pet to return")], **kwargs) -> Pet:  # noqa: E501
         """Find pet by ID  # noqa: E501
 
         Returns a single pet  # noqa: E501
@@ -576,7 +576,7 @@ class PetApi:
         return await self.get_pet_by_id_with_http_info(pet_id, **kwargs)  # noqa: E501
 
     @validate_arguments
-    async def get_pet_by_id_with_http_info(self, pet_id : Annotated[StrictInt, Field(..., description="ID of pet to return")], **kwargs) -> ApiResponse:  # noqa: E501
+    async def get_pet_by_id_with_http_info(self, pet_id : Annotated[StrictInt, Field(description="ID of pet to return")], **kwargs) -> ApiResponse:  # noqa: E501
         """Find pet by ID  # noqa: E501
 
         Returns a single pet  # noqa: E501
@@ -679,7 +679,7 @@ class PetApi:
             _request_auth=_params.get('_request_auth'))
 
     @validate_arguments
-    async def update_pet(self, pet : Annotated[Pet, Field(..., description="Pet object that needs to be added to the store")], **kwargs) -> None:  # noqa: E501
+    async def update_pet(self, pet : Annotated[Pet, Field(description="Pet object that needs to be added to the store")], **kwargs) -> None:  # noqa: E501
         """Update an existing pet  # noqa: E501
 
           # noqa: E501
@@ -702,7 +702,7 @@ class PetApi:
         return await self.update_pet_with_http_info(pet, **kwargs)  # noqa: E501
 
     @validate_arguments
-    async def update_pet_with_http_info(self, pet : Annotated[Pet, Field(..., description="Pet object that needs to be added to the store")], **kwargs) -> ApiResponse:  # noqa: E501
+    async def update_pet_with_http_info(self, pet : Annotated[Pet, Field(description="Pet object that needs to be added to the store")], **kwargs) -> ApiResponse:  # noqa: E501
         """Update an existing pet  # noqa: E501
 
           # noqa: E501
@@ -804,7 +804,7 @@ class PetApi:
             _request_auth=_params.get('_request_auth'))
 
     @validate_arguments
-    async def update_pet_with_form(self, pet_id : Annotated[StrictInt, Field(..., description="ID of pet that needs to be updated")], name : Annotated[Optional[StrictStr], Field(description="Updated name of the pet")] = None, status : Annotated[Optional[StrictStr], Field(description="Updated status of the pet")] = None, **kwargs) -> None:  # noqa: E501
+    async def update_pet_with_form(self, pet_id : Annotated[StrictInt, Field(description="ID of pet that needs to be updated")], name : Annotated[Optional[StrictStr], Field(description="Updated name of the pet")] = None, status : Annotated[Optional[StrictStr], Field(description="Updated status of the pet")] = None, **kwargs) -> None:  # noqa: E501
         """Updates a pet in the store with form data  # noqa: E501
 
           # noqa: E501
@@ -831,7 +831,7 @@ class PetApi:
         return await self.update_pet_with_form_with_http_info(pet_id, name, status, **kwargs)  # noqa: E501
 
     @validate_arguments
-    async def update_pet_with_form_with_http_info(self, pet_id : Annotated[StrictInt, Field(..., description="ID of pet that needs to be updated")], name : Annotated[Optional[StrictStr], Field(description="Updated name of the pet")] = None, status : Annotated[Optional[StrictStr], Field(description="Updated status of the pet")] = None, **kwargs) -> ApiResponse:  # noqa: E501
+    async def update_pet_with_form_with_http_info(self, pet_id : Annotated[StrictInt, Field(description="ID of pet that needs to be updated")], name : Annotated[Optional[StrictStr], Field(description="Updated name of the pet")] = None, status : Annotated[Optional[StrictStr], Field(description="Updated status of the pet")] = None, **kwargs) -> ApiResponse:  # noqa: E501
         """Updates a pet in the store with form data  # noqa: E501
 
           # noqa: E501
@@ -945,7 +945,7 @@ class PetApi:
             _request_auth=_params.get('_request_auth'))
 
     @validate_arguments
-    async def upload_file(self, pet_id : Annotated[StrictInt, Field(..., description="ID of pet to update")], additional_metadata : Annotated[Optional[StrictStr], Field(description="Additional data to pass to server")] = None, file : Annotated[Optional[Union[StrictBytes, StrictStr]], Field(description="file to upload")] = None, **kwargs) -> ApiResponse:  # noqa: E501
+    async def upload_file(self, pet_id : Annotated[StrictInt, Field(description="ID of pet to update")], additional_metadata : Annotated[Optional[StrictStr], Field(description="Additional data to pass to server")] = None, file : Annotated[Optional[Union[StrictBytes, StrictStr]], Field(description="file to upload")] = None, **kwargs) -> ApiResponse:  # noqa: E501
         """uploads an image  # noqa: E501
 
           # noqa: E501
@@ -972,7 +972,7 @@ class PetApi:
         return await self.upload_file_with_http_info(pet_id, additional_metadata, file, **kwargs)  # noqa: E501
 
     @validate_arguments
-    async def upload_file_with_http_info(self, pet_id : Annotated[StrictInt, Field(..., description="ID of pet to update")], additional_metadata : Annotated[Optional[StrictStr], Field(description="Additional data to pass to server")] = None, file : Annotated[Optional[Union[StrictBytes, StrictStr]], Field(description="file to upload")] = None, **kwargs) -> ApiResponse:  # noqa: E501
+    async def upload_file_with_http_info(self, pet_id : Annotated[StrictInt, Field(description="ID of pet to update")], additional_metadata : Annotated[Optional[StrictStr], Field(description="Additional data to pass to server")] = None, file : Annotated[Optional[Union[StrictBytes, StrictStr]], Field(description="file to upload")] = None, **kwargs) -> ApiResponse:  # noqa: E501
         """uploads an image  # noqa: E501
 
           # noqa: E501
@@ -1092,7 +1092,7 @@ class PetApi:
             _request_auth=_params.get('_request_auth'))
 
     @validate_arguments
-    async def upload_file_with_required_file(self, pet_id : Annotated[StrictInt, Field(..., description="ID of pet to update")], required_file : Annotated[Union[StrictBytes, StrictStr], Field(..., description="file to upload")], additional_metadata : Annotated[Optional[StrictStr], Field(description="Additional data to pass to server")] = None, **kwargs) -> ApiResponse:  # noqa: E501
+    async def upload_file_with_required_file(self, pet_id : Annotated[StrictInt, Field(description="ID of pet to update")], required_file : Annotated[Union[StrictBytes, StrictStr], Field(description="file to upload")], additional_metadata : Annotated[Optional[StrictStr], Field(description="Additional data to pass to server")] = None, **kwargs) -> ApiResponse:  # noqa: E501
         """uploads an image (required)  # noqa: E501
 
           # noqa: E501
@@ -1119,7 +1119,7 @@ class PetApi:
         return await self.upload_file_with_required_file_with_http_info(pet_id, required_file, additional_metadata, **kwargs)  # noqa: E501
 
     @validate_arguments
-    async def upload_file_with_required_file_with_http_info(self, pet_id : Annotated[StrictInt, Field(..., description="ID of pet to update")], required_file : Annotated[Union[StrictBytes, StrictStr], Field(..., description="file to upload")], additional_metadata : Annotated[Optional[StrictStr], Field(description="Additional data to pass to server")] = None, **kwargs) -> ApiResponse:  # noqa: E501
+    async def upload_file_with_required_file_with_http_info(self, pet_id : Annotated[StrictInt, Field(description="ID of pet to update")], required_file : Annotated[Union[StrictBytes, StrictStr], Field(description="file to upload")], additional_metadata : Annotated[Optional[StrictStr], Field(description="Additional data to pass to server")] = None, **kwargs) -> ApiResponse:  # noqa: E501
         """uploads an image (required)  # noqa: E501
 
           # noqa: E501

samples/openapi3/client/petstore/python-aiohttp/petstore_api/api/store_api.py

@@ -17,10 +17,10 @@ import io
 import warnings
 
 from pydantic import validate_arguments, ValidationError
-from typing import overload, Optional, Union, Awaitable
 
+from pydantic import Field
 from typing_extensions import Annotated
-from pydantic import Field, StrictStr, conint
+from pydantic import StrictStr
 
 from typing import Dict
 
@@ -47,7 +47,7 @@ class StoreApi:
         self.api_client = api_client
 
     @validate_arguments
-    async def delete_order(self, order_id : Annotated[StrictStr, Field(..., description="ID of the order that needs to be deleted")], **kwargs) -> None:  # noqa: E501
+    async def delete_order(self, order_id : Annotated[StrictStr, Field(description="ID of the order that needs to be deleted")], **kwargs) -> None:  # noqa: E501
         """Delete purchase order by ID  # noqa: E501
 
         For valid response try integer IDs with value < 1000. Anything above 1000 or nonintegers will generate API errors  # noqa: E501
@@ -70,7 +70,7 @@ class StoreApi:
         return await self.delete_order_with_http_info(order_id, **kwargs)  # noqa: E501
 
     @validate_arguments
-    async def delete_order_with_http_info(self, order_id : Annotated[StrictStr, Field(..., description="ID of the order that needs to be deleted")], **kwargs) -> ApiResponse:  # noqa: E501
+    async def delete_order_with_http_info(self, order_id : Annotated[StrictStr, Field(description="ID of the order that needs to be deleted")], **kwargs) -> ApiResponse:  # noqa: E501
         """Delete purchase order by ID  # noqa: E501
 
         For valid response try integer IDs with value < 1000. Anything above 1000 or nonintegers will generate API errors  # noqa: E501
@@ -281,7 +281,7 @@ class StoreApi:
             _request_auth=_params.get('_request_auth'))
 
     @validate_arguments
-    async def get_order_by_id(self, order_id : Annotated[conint(strict=True, le=5, ge=1), Field(..., description="ID of pet that needs to be fetched")], **kwargs) -> Order:  # noqa: E501
+    async def get_order_by_id(self, order_id : Annotated[int, Field(le=5, strict=True, ge=1, description="ID of pet that needs to be fetched")], **kwargs) -> Order:  # noqa: E501
         """Find purchase order by ID  # noqa: E501
 
         For valid response try integer IDs with value <= 5 or > 10. Other values will generated exceptions  # noqa: E501
@@ -304,7 +304,7 @@ class StoreApi:
         return await self.get_order_by_id_with_http_info(order_id, **kwargs)  # noqa: E501
 
     @validate_arguments
-    async def get_order_by_id_with_http_info(self, order_id : Annotated[conint(strict=True, le=5, ge=1), Field(..., description="ID of pet that needs to be fetched")], **kwargs) -> ApiResponse:  # noqa: E501
+    async def get_order_by_id_with_http_info(self, order_id : Annotated[int, Field(le=5, strict=True, ge=1, description="ID of pet that needs to be fetched")], **kwargs) -> ApiResponse:  # noqa: E501
         """Find purchase order by ID  # noqa: E501
 
         For valid response try integer IDs with value <= 5 or > 10. Other values will generated exceptions  # noqa: E501
@@ -407,7 +407,7 @@ class StoreApi:
             _request_auth=_params.get('_request_auth'))
 
     @validate_arguments
-    async def place_order(self, order : Annotated[Order, Field(..., description="order placed for purchasing the pet")], **kwargs) -> Order:  # noqa: E501
+    async def place_order(self, order : Annotated[Order, Field(description="order placed for purchasing the pet")], **kwargs) -> Order:  # noqa: E501
         """Place an order for a pet  # noqa: E501
 
           # noqa: E501
@@ -430,7 +430,7 @@ class StoreApi:
         return await self.place_order_with_http_info(order, **kwargs)  # noqa: E501
 
     @validate_arguments
-    async def place_order_with_http_info(self, order : Annotated[Order, Field(..., description="order placed for purchasing the pet")], **kwargs) -> ApiResponse:  # noqa: E501
+    async def place_order_with_http_info(self, order : Annotated[Order, Field(description="order placed for purchasing the pet")], **kwargs) -> ApiResponse:  # noqa: E501
         """Place an order for a pet  # noqa: E501
 
           # noqa: E501

samples/openapi3/client/petstore/python-aiohttp/petstore_api/api/user_api.py

@@ -17,10 +17,12 @@ import io
 import warnings
 
 from pydantic import validate_arguments, ValidationError
-from typing import overload, Optional, Union, Awaitable
 
+from pydantic import Field
 from typing_extensions import Annotated
-from pydantic import Field, StrictStr, conlist
+from pydantic import StrictStr
+
+from typing import List
 
 from petstore_api.models.user import User
 
@@ -45,7 +47,7 @@ class UserApi:
         self.api_client = api_client
 
     @validate_arguments
-    async def create_user(self, user : Annotated[User, Field(..., description="Created user object")], **kwargs) -> None:  # noqa: E501
+    async def create_user(self, user : Annotated[User, Field(description="Created user object")], **kwargs) -> None:  # noqa: E501
         """Create user  # noqa: E501
 
         This can only be done by the logged in user.  # noqa: E501
@@ -68,7 +70,7 @@ class UserApi:
         return await self.create_user_with_http_info(user, **kwargs)  # noqa: E501
 
     @validate_arguments
-    async def create_user_with_http_info(self, user : Annotated[User, Field(..., description="Created user object")], **kwargs) -> ApiResponse:  # noqa: E501
+    async def create_user_with_http_info(self, user : Annotated[User, Field(description="Created user object")], **kwargs) -> ApiResponse:  # noqa: E501
         """Create user  # noqa: E501
 
         This can only be done by the logged in user.  # noqa: E501
@@ -185,7 +187,7 @@ class UserApi:
             _request_auth=_params.get('_request_auth'))
 
     @validate_arguments
-    async def create_users_with_array_input(self, user : Annotated[conlist(User), Field(..., description="List of user object")], **kwargs) -> None:  # noqa: E501
+    async def create_users_with_array_input(self, user : Annotated[List[User], Field(description="List of user object")], **kwargs) -> None:  # noqa: E501
         """Creates list of users with given input array  # noqa: E501
 
           # noqa: E501
@@ -208,7 +210,7 @@ class UserApi:
         return await self.create_users_with_array_input_with_http_info(user, **kwargs)  # noqa: E501
 
     @validate_arguments
-    async def create_users_with_array_input_with_http_info(self, user : Annotated[conlist(User), Field(..., description="List of user object")], **kwargs) -> ApiResponse:  # noqa: E501
+    async def create_users_with_array_input_with_http_info(self, user : Annotated[List[User], Field(description="List of user object")], **kwargs) -> ApiResponse:  # noqa: E501
         """Creates list of users with given input array  # noqa: E501
 
           # noqa: E501
@@ -310,7 +312,7 @@ class UserApi:
             _request_auth=_params.get('_request_auth'))
 
     @validate_arguments
-    async def create_users_with_list_input(self, user : Annotated[conlist(User), Field(..., description="List of user object")], **kwargs) -> None:  # noqa: E501
+    async def create_users_with_list_input(self, user : Annotated[List[User], Field(description="List of user object")], **kwargs) -> None:  # noqa: E501
         """Creates list of users with given input array  # noqa: E501
 
           # noqa: E501
@@ -333,7 +335,7 @@ class UserApi:
         return await self.create_users_with_list_input_with_http_info(user, **kwargs)  # noqa: E501
 
     @validate_arguments
-    async def create_users_with_list_input_with_http_info(self, user : Annotated[conlist(User), Field(..., description="List of user object")], **kwargs) -> ApiResponse:  # noqa: E501
+    async def create_users_with_list_input_with_http_info(self, user : Annotated[List[User], Field(description="List of user object")], **kwargs) -> ApiResponse:  # noqa: E501
         """Creates list of users with given input array  # noqa: E501
 
           # noqa: E501
@@ -435,7 +437,7 @@ class UserApi:
             _request_auth=_params.get('_request_auth'))
 
     @validate_arguments
-    async def delete_user(self, username : Annotated[StrictStr, Field(..., description="The name that needs to be deleted")], **kwargs) -> None:  # noqa: E501
+    async def delete_user(self, username : Annotated[StrictStr, Field(description="The name that needs to be deleted")], **kwargs) -> None:  # noqa: E501
         """Delete user  # noqa: E501
 
         This can only be done by the logged in user.  # noqa: E501
@@ -458,7 +460,7 @@ class UserApi:
         return await self.delete_user_with_http_info(username, **kwargs)  # noqa: E501
 
     @validate_arguments
-    async def delete_user_with_http_info(self, username : Annotated[StrictStr, Field(..., description="The name that needs to be deleted")], **kwargs) -> ApiResponse:  # noqa: E501
+    async def delete_user_with_http_info(self, username : Annotated[StrictStr, Field(description="The name that needs to be deleted")], **kwargs) -> ApiResponse:  # noqa: E501
         """Delete user  # noqa: E501
 
         This can only be done by the logged in user.  # noqa: E501
@@ -553,7 +555,7 @@ class UserApi:
             _request_auth=_params.get('_request_auth'))
 
     @validate_arguments
-    async def get_user_by_name(self, username : Annotated[StrictStr, Field(..., description="The name that needs to be fetched. Use user1 for testing.")], **kwargs) -> User:  # noqa: E501
+    async def get_user_by_name(self, username : Annotated[StrictStr, Field(description="The name that needs to be fetched. Use user1 for testing.")], **kwargs) -> User:  # noqa: E501
         """Get user by user name  # noqa: E501
 
           # noqa: E501
@@ -576,7 +578,7 @@ class UserApi:
         return await self.get_user_by_name_with_http_info(username, **kwargs)  # noqa: E501
 
     @validate_arguments
-    async def get_user_by_name_with_http_info(self, username : Annotated[StrictStr, Field(..., description="The name that needs to be fetched. Use user1 for testing.")], **kwargs) -> ApiResponse:  # noqa: E501
+    async def get_user_by_name_with_http_info(self, username : Annotated[StrictStr, Field(description="The name that needs to be fetched. Use user1 for testing.")], **kwargs) -> ApiResponse:  # noqa: E501
         """Get user by user name  # noqa: E501
 
           # noqa: E501
@@ -679,7 +681,7 @@ class UserApi:
             _request_auth=_params.get('_request_auth'))
 
     @validate_arguments
-    async def login_user(self, username : Annotated[StrictStr, Field(..., description="The user name for login")], password : Annotated[StrictStr, Field(..., description="The password for login in clear text")], **kwargs) -> str:  # noqa: E501
+    async def login_user(self, username : Annotated[StrictStr, Field(description="The user name for login")], password : Annotated[StrictStr, Field(description="The password for login in clear text")], **kwargs) -> str:  # noqa: E501
         """Logs user into the system  # noqa: E501
 
           # noqa: E501
@@ -704,7 +706,7 @@ class UserApi:
         return await self.login_user_with_http_info(username, password, **kwargs)  # noqa: E501
 
     @validate_arguments
-    async def login_user_with_http_info(self, username : Annotated[StrictStr, Field(..., description="The user name for login")], password : Annotated[StrictStr, Field(..., description="The password for login in clear text")], **kwargs) -> ApiResponse:  # noqa: E501
+    async def login_user_with_http_info(self, username : Annotated[StrictStr, Field(description="The user name for login")], password : Annotated[StrictStr, Field(description="The password for login in clear text")], **kwargs) -> ApiResponse:  # noqa: E501
         """Logs user into the system  # noqa: E501
 
           # noqa: E501
@@ -922,7 +924,7 @@ class UserApi:
             _request_auth=_params.get('_request_auth'))
 
     @validate_arguments
-    async def update_user(self, username : Annotated[StrictStr, Field(..., description="name that need to be deleted")], user : Annotated[User, Field(..., description="Updated user object")], **kwargs) -> None:  # noqa: E501
+    async def update_user(self, username : Annotated[StrictStr, Field(description="name that need to be deleted")], user : Annotated[User, Field(description="Updated user object")], **kwargs) -> None:  # noqa: E501
         """Updated user  # noqa: E501
 
         This can only be done by the logged in user.  # noqa: E501
@@ -947,7 +949,7 @@ class UserApi:
         return await self.update_user_with_http_info(username, user, **kwargs)  # noqa: E501
 
     @validate_arguments
-    async def update_user_with_http_info(self, username : Annotated[StrictStr, Field(..., description="name that need to be deleted")], user : Annotated[User, Field(..., description="Updated user object")], **kwargs) -> ApiResponse:  # noqa: E501
+    async def update_user_with_http_info(self, username : Annotated[StrictStr, Field(description="name that need to be deleted")], user : Annotated[User, Field(description="Updated user object")], **kwargs) -> ApiResponse:  # noqa: E501
         """Updated user  # noqa: E501
 
         This can only be done by the logged in user.  # noqa: E501

samples/openapi3/client/petstore/python-aiohttp/petstore_api/models/additional_properties_any_type.py

@@ -40,6 +40,7 @@ class AdditionalPropertiesAnyType(BaseModel):
 
     def to_json(self) -> str:
         """Returns the JSON representation of the model using alias"""
+        # TODO: pydantic v2: use .model_dump_json(by_alias=True, exclude_unset=True) instead
         return json.dumps(self.to_dict())
 
     @classmethod
@@ -75,7 +76,7 @@ class AdditionalPropertiesAnyType(BaseModel):
         })
         # store additional fields in additional_properties
         for _key in obj.keys():
-            if _key not in cls.__properties:
+            if _key not in cls.__properties.default:
                 _obj.additional_properties[_key] = obj.get(_key)
 
         return _obj

samples/openapi3/client/petstore/python-aiohttp/petstore_api/models/additional_properties_class.py

@@ -40,6 +40,7 @@ class AdditionalPropertiesClass(BaseModel):
 
     def to_json(self) -> str:
         """Returns the JSON representation of the model using alias"""
+        # TODO: pydantic v2: use .model_dump_json(by_alias=True, exclude_unset=True) instead
         return json.dumps(self.to_dict())
 
     @classmethod

samples/openapi3/client/petstore/python-aiohttp/petstore_api/models/additional_properties_object.py

@@ -40,6 +40,7 @@ class AdditionalPropertiesObject(BaseModel):
 
     def to_json(self) -> str:
         """Returns the JSON representation of the model using alias"""
+        # TODO: pydantic v2: use .model_dump_json(by_alias=True, exclude_unset=True) instead
         return json.dumps(self.to_dict())
 
     @classmethod
@@ -75,7 +76,7 @@ class AdditionalPropertiesObject(BaseModel):
         })
         # store additional fields in additional_properties
         for _key in obj.keys():
-            if _key not in cls.__properties:
+            if _key not in cls.__properties.default:
                 _obj.additional_properties[_key] = obj.get(_key)
 
         return _obj

samples/openapi3/client/petstore/python-aiohttp/petstore_api/models/additional_properties_with_description_only.py

@@ -40,6 +40,7 @@ class AdditionalPropertiesWithDescriptionOnly(BaseModel):
 
     def to_json(self) -> str:
         """Returns the JSON representation of the model using alias"""
+        # TODO: pydantic v2: use .model_dump_json(by_alias=True, exclude_unset=True) instead
         return json.dumps(self.to_dict())
 
     @classmethod
@@ -75,7 +76,7 @@ class AdditionalPropertiesWithDescriptionOnly(BaseModel):
         })
         # store additional fields in additional_properties
         for _key in obj.keys():
-            if _key not in cls.__properties:
+            if _key not in cls.__properties.default:
                 _obj.additional_properties[_key] = obj.get(_key)
 
         return _obj

samples/openapi3/client/petstore/python-aiohttp/petstore_api/models/all_of_with_single_ref.py

@@ -19,7 +19,8 @@ import json
 
 
 from typing import Optional
-from pydantic import BaseModel, Field, StrictStr
+from pydantic import BaseModel, StrictStr
+from pydantic import Field
 from petstore_api.models.single_ref_type import SingleRefType
 
 class AllOfWithSingleRef(BaseModel):
@@ -27,7 +28,7 @@ class AllOfWithSingleRef(BaseModel):
     AllOfWithSingleRef
     """
     username: Optional[StrictStr] = None
-    single_ref_type: Optional[SingleRefType] = Field(None, alias="SingleRefType")
+    single_ref_type: Optional[SingleRefType] = Field(default=None, alias="SingleRefType")
     __properties = ["username", "SingleRefType"]
 
     class Config:
@@ -41,6 +42,7 @@ class AllOfWithSingleRef(BaseModel):
 
     def to_json(self) -> str:
         """Returns the JSON representation of the model using alias"""
+        # TODO: pydantic v2: use .model_dump_json(by_alias=True, exclude_unset=True) instead
         return json.dumps(self.to_dict())
 
     @classmethod
@@ -67,7 +69,7 @@ class AllOfWithSingleRef(BaseModel):
 
         _obj = AllOfWithSingleRef.parse_obj({
             "username": obj.get("username"),
-            "single_ref_type": obj.get("SingleRefType")
+            "SingleRefType": obj.get("SingleRefType")
         })
         return _obj
 

samples/openapi3/client/petstore/python-aiohttp/petstore_api/models/animal.py

@@ -19,13 +19,14 @@ import json
 
 
 from typing import Optional, Union
-from pydantic import BaseModel, Field, StrictStr
+from pydantic import BaseModel, StrictStr
+from pydantic import Field
 
 class Animal(BaseModel):
     """
     Animal
     """
-    class_name: StrictStr = Field(..., alias="className")
+    class_name: StrictStr = Field(alias="className")
     color: Optional[StrictStr] = 'red'
     __properties = ["className", "color"]
 
@@ -46,9 +47,9 @@ class Animal(BaseModel):
     @classmethod
     def get_discriminator_value(cls, obj: dict) -> str:
         """Returns the discriminator value (object type) of the data"""
-        discriminator_value = obj[cls.__discriminator_property_name]
+        discriminator_value = obj[cls.__discriminator_property_name.default]
         if discriminator_value:
-            return cls.__discriminator_value_class_map.get(discriminator_value)
+            return cls.__discriminator_value_class_map.default.get(discriminator_value)
         else:
             return None
 
@@ -58,6 +59,7 @@ class Animal(BaseModel):
 
     def to_json(self) -> str:
         """Returns the JSON representation of the model using alias"""
+        # TODO: pydantic v2: use .model_dump_json(by_alias=True, exclude_unset=True) instead
         return json.dumps(self.to_dict())
 
     @classmethod
@@ -83,10 +85,14 @@ class Animal(BaseModel):
             return klass.from_dict(obj)
         else:
             raise ValueError("Animal failed to lookup discriminator value from " +
-                             json.dumps(obj) + ". Discriminator property name: " + cls.__discriminator_property_name +
-                             ", mapping: " + json.dumps(cls.__discriminator_value_class_map))
+                             json.dumps(obj) + ". Discriminator property name: " + cls.__discriminator_property_name.default +
+                             ", mapping: " + json.dumps(cls.__discriminator_value_class_map.default))
 
 from petstore_api.models.cat import Cat
 from petstore_api.models.dog import Dog
-Animal.update_forward_refs()
+from typing import TYPE_CHECKING
+if TYPE_CHECKING:
+    # TODO: pydantic v2
+    # Animal.model_rebuild()
+    pass
 

samples/openapi3/client/petstore/python-aiohttp/petstore_api/models/any_of_color.py

@@ -19,8 +19,11 @@ import pprint
 import re  # noqa: F401
 
 from typing import List, Optional
-from pydantic import BaseModel, Field, StrictStr, ValidationError, conint, conlist, constr, validator
-from typing import Union, Any, List, TYPE_CHECKING
+from pydantic import BaseModel, Field, StrictStr, ValidationError, validator
+from pydantic import Field
+from typing_extensions import Annotated
+from typing import Union, Any, List, TYPE_CHECKING, Optional, Dict
+from typing_extensions import Literal
 from pydantic import StrictStr, Field
 
 ANYOFCOLOR_ANY_OF_SCHEMAS = ["List[int]", "str"]
@@ -31,16 +34,16 @@ class AnyOfColor(BaseModel):
     """
 
     # data type: List[int]
-    anyof_schema_1_validator: Optional[conlist(conint(strict=True, le=255, ge=0), max_items=3, min_items=3)] = Field(None, description="RGB three element array with values 0-255.")
+    anyof_schema_1_validator: Optional[Annotated[List[Annotated[int, Field(le=255, strict=True, ge=0)]], Field(min_items=3, max_items=3)]] = Field(default=None, description="RGB three element array with values 0-255.")
     # data type: List[int]
-    anyof_schema_2_validator: Optional[conlist(conint(strict=True, le=255, ge=0), max_items=4, min_items=4)] = Field(None, description="RGBA four element array with values 0-255.")
+    anyof_schema_2_validator: Optional[Annotated[List[Annotated[int, Field(le=255, strict=True, ge=0)]], Field(min_items=4, max_items=4)]] = Field(default=None, description="RGBA four element array with values 0-255.")
     # data type: str
-    anyof_schema_3_validator: Optional[constr(strict=True, max_length=7, min_length=7)] = Field(None, description="Hex color string, such as #00FF00.")
+    anyof_schema_3_validator: Optional[Annotated[str, Field(min_length=7, strict=True, max_length=7)]] = Field(default=None, description="Hex color string, such as #00FF00.")
     if TYPE_CHECKING:
-        actual_instance: Union[List[int], str]
+        actual_instance: Optional[Union[List[int], str]] = None
     else:
-        actual_instance: Any
-    any_of_schemas: List[str] = Field(ANYOFCOLOR_ANY_OF_SCHEMAS, const=True)
+        actual_instance: Any = None
+    any_of_schemas: List[str] = Literal[ANYOFCOLOR_ANY_OF_SCHEMAS]
 
     class Config:
         validate_assignment = True

samples/openapi3/client/petstore/python-aiohttp/petstore_api/models/any_of_pig.py

@@ -22,7 +22,8 @@ from typing import Optional
 from pydantic import BaseModel, Field, StrictStr, ValidationError, validator
 from petstore_api.models.basque_pig import BasquePig
 from petstore_api.models.danish_pig import DanishPig
-from typing import Union, Any, List, TYPE_CHECKING
+from typing import Union, Any, List, TYPE_CHECKING, Optional, Dict
+from typing_extensions import Literal
 from pydantic import StrictStr, Field
 
 ANYOFPIG_ANY_OF_SCHEMAS = ["BasquePig", "DanishPig"]
@@ -37,10 +38,10 @@ class AnyOfPig(BaseModel):
     # data type: DanishPig
     anyof_schema_2_validator: Optional[DanishPig] = None
     if TYPE_CHECKING:
-        actual_instance: Union[BasquePig, DanishPig]
+        actual_instance: Optional[Union[BasquePig, DanishPig]] = None
     else:
-        actual_instance: Any
-    any_of_schemas: List[str] = Field(ANYOFPIG_ANY_OF_SCHEMAS, const=True)
+        actual_instance: Any = None
+    any_of_schemas: List[str] = Literal[ANYOFPIG_ANY_OF_SCHEMAS]
 
     class Config:
         validate_assignment = True

samples/openapi3/client/petstore/python-aiohttp/petstore_api/models/api_response.py

@@ -41,6 +41,7 @@ class ApiResponse(BaseModel):
 
     def to_json(self) -> str:
         """Returns the JSON representation of the model using alias"""
+        # TODO: pydantic v2: use .model_dump_json(by_alias=True, exclude_unset=True) instead
         return json.dumps(self.to_dict())
 
     @classmethod

samples/openapi3/client/petstore/python-aiohttp/petstore_api/models/array_of_array_of_model.py

@@ -19,14 +19,14 @@ import json
 
 
 from typing import List, Optional
-from pydantic import BaseModel, conlist
+from pydantic import BaseModel
 from petstore_api.models.tag import Tag
 
 class ArrayOfArrayOfModel(BaseModel):
     """
     ArrayOfArrayOfModel
     """
-    another_property: Optional[conlist(conlist(Tag))] = None
+    another_property: Optional[List[List[Tag]]] = None
     __properties = ["another_property"]
 
     class Config:
@@ -40,6 +40,7 @@ class ArrayOfArrayOfModel(BaseModel):
 
     def to_json(self) -> str:
         """Returns the JSON representation of the model using alias"""
+        # TODO: pydantic v2: use .model_dump_json(by_alias=True, exclude_unset=True) instead
         return json.dumps(self.to_dict())
 
     @classmethod

samples/openapi3/client/petstore/python-aiohttp/petstore_api/models/array_of_array_of_number_only.py

@@ -19,13 +19,14 @@ import json
 
 
 from typing import List, Optional
-from pydantic import BaseModel, Field, conlist
+from pydantic import BaseModel
+from pydantic import Field
 
 class ArrayOfArrayOfNumberOnly(BaseModel):
     """
     ArrayOfArrayOfNumberOnly
     """
-    array_array_number: Optional[conlist(conlist(float))] = Field(None, alias="ArrayArrayNumber")
+    array_array_number: Optional[List[List[float]]] = Field(default=None, alias="ArrayArrayNumber")
     __properties = ["ArrayArrayNumber"]
 
     class Config:
@@ -39,6 +40,7 @@ class ArrayOfArrayOfNumberOnly(BaseModel):
 
     def to_json(self) -> str:
         """Returns the JSON representation of the model using alias"""
+        # TODO: pydantic v2: use .model_dump_json(by_alias=True, exclude_unset=True) instead
         return json.dumps(self.to_dict())
 
     @classmethod
@@ -64,7 +66,7 @@ class ArrayOfArrayOfNumberOnly(BaseModel):
             return ArrayOfArrayOfNumberOnly.parse_obj(obj)
 
         _obj = ArrayOfArrayOfNumberOnly.parse_obj({
-            "array_array_number": obj.get("ArrayArrayNumber")
+            "ArrayArrayNumber": obj.get("ArrayArrayNumber")
         })
         return _obj
 

samples/openapi3/client/petstore/python-aiohttp/petstore_api/models/array_of_number_only.py

@@ -19,13 +19,14 @@ import json
 
 
 from typing import List, Optional
-from pydantic import BaseModel, Field, conlist
+from pydantic import BaseModel
+from pydantic import Field
 
 class ArrayOfNumberOnly(BaseModel):
     """
     ArrayOfNumberOnly
     """
-    array_number: Optional[conlist(float)] = Field(None, alias="ArrayNumber")
+    array_number: Optional[List[float]] = Field(default=None, alias="ArrayNumber")
     __properties = ["ArrayNumber"]
 
     class Config:
@@ -39,6 +40,7 @@ class ArrayOfNumberOnly(BaseModel):
 
     def to_json(self) -> str:
         """Returns the JSON representation of the model using alias"""
+        # TODO: pydantic v2: use .model_dump_json(by_alias=True, exclude_unset=True) instead
         return json.dumps(self.to_dict())
 
     @classmethod
@@ -64,7 +66,7 @@ class ArrayOfNumberOnly(BaseModel):
             return ArrayOfNumberOnly.parse_obj(obj)
 
         _obj = ArrayOfNumberOnly.parse_obj({
-            "array_number": obj.get("ArrayNumber")
+            "ArrayNumber": obj.get("ArrayNumber")
         })
         return _obj
 

samples/openapi3/client/petstore/python-aiohttp/petstore_api/models/array_test.py

@@ -19,16 +19,18 @@ import json
 
 
 from typing import List, Optional
-from pydantic import BaseModel, StrictInt, StrictStr, conlist
+from pydantic import BaseModel, StrictInt, StrictStr
+from pydantic import Field
+from typing_extensions import Annotated
 from petstore_api.models.read_only_first import ReadOnlyFirst
 
 class ArrayTest(BaseModel):
     """
     ArrayTest
     """
-    array_of_string: Optional[conlist(StrictStr, max_items=3, min_items=0)] = None
-    array_array_of_integer: Optional[conlist(conlist(StrictInt))] = None
-    array_array_of_model: Optional[conlist(conlist(ReadOnlyFirst))] = None
+    array_of_string: Optional[Annotated[List[StrictStr], Field(min_items=0, max_items=3)]] = None
+    array_array_of_integer: Optional[List[List[StrictInt]]] = None
+    array_array_of_model: Optional[List[List[ReadOnlyFirst]]] = None
     __properties = ["array_of_string", "array_array_of_integer", "array_array_of_model"]
 
     class Config:
@@ -42,6 +44,7 @@ class ArrayTest(BaseModel):
 
     def to_json(self) -> str:
         """Returns the JSON representation of the model using alias"""
+        # TODO: pydantic v2: use .model_dump_json(by_alias=True, exclude_unset=True) instead
         return json.dumps(self.to_dict())
 
     @classmethod

samples/openapi3/client/petstore/python-aiohttp/petstore_api/models/basque_pig.py

@@ -19,14 +19,15 @@ import json
 
 
 
-from pydantic import BaseModel, Field, StrictStr
+from pydantic import BaseModel, StrictStr
+from pydantic import Field
 
 class BasquePig(BaseModel):
     """
     BasquePig
     """
-    class_name: StrictStr = Field(..., alias="className")
-    color: StrictStr = Field(...)
+    class_name: StrictStr = Field(alias="className")
+    color: StrictStr
     __properties = ["className", "color"]
 
     class Config:
@@ -40,6 +41,7 @@ class BasquePig(BaseModel):
 
     def to_json(self) -> str:
         """Returns the JSON representation of the model using alias"""
+        # TODO: pydantic v2: use .model_dump_json(by_alias=True, exclude_unset=True) instead
         return json.dumps(self.to_dict())
 
     @classmethod
@@ -65,7 +67,7 @@ class BasquePig(BaseModel):
             return BasquePig.parse_obj(obj)
 
         _obj = BasquePig.parse_obj({
-            "class_name": obj.get("className"),
+            "className": obj.get("className"),
             "color": obj.get("color")
         })
         return _obj

samples/openapi3/client/petstore/python-aiohttp/petstore_api/models/capitalization.py

@@ -19,18 +19,19 @@ import json
 
 
 from typing import Optional
-from pydantic import BaseModel, Field, StrictStr
+from pydantic import BaseModel, StrictStr
+from pydantic import Field
 
 class Capitalization(BaseModel):
     """
     Capitalization
     """
-    small_camel: Optional[StrictStr] = Field(None, alias="smallCamel")
-    capital_camel: Optional[StrictStr] = Field(None, alias="CapitalCamel")
-    small_snake: Optional[StrictStr] = Field(None, alias="small_Snake")
-    capital_snake: Optional[StrictStr] = Field(None, alias="Capital_Snake")
-    sca_eth_flow_points: Optional[StrictStr] = Field(None, alias="SCA_ETH_Flow_Points")
-    att_name: Optional[StrictStr] = Field(None, alias="ATT_NAME", description="Name of the pet ")
+    small_camel: Optional[StrictStr] = Field(default=None, alias="smallCamel")
+    capital_camel: Optional[StrictStr] = Field(default=None, alias="CapitalCamel")
+    small_snake: Optional[StrictStr] = Field(default=None, alias="small_Snake")
+    capital_snake: Optional[StrictStr] = Field(default=None, alias="Capital_Snake")
+    sca_eth_flow_points: Optional[StrictStr] = Field(default=None, alias="SCA_ETH_Flow_Points")
+    att_name: Optional[StrictStr] = Field(default=None, description="Name of the pet ", alias="ATT_NAME")
     __properties = ["smallCamel", "CapitalCamel", "small_Snake", "Capital_Snake", "SCA_ETH_Flow_Points", "ATT_NAME"]
 
     class Config:
@@ -44,6 +45,7 @@ class Capitalization(BaseModel):
 
     def to_json(self) -> str:
         """Returns the JSON representation of the model using alias"""
+        # TODO: pydantic v2: use .model_dump_json(by_alias=True, exclude_unset=True) instead
         return json.dumps(self.to_dict())
 
     @classmethod
@@ -69,12 +71,12 @@ class Capitalization(BaseModel):
             return Capitalization.parse_obj(obj)
 
         _obj = Capitalization.parse_obj({
-            "small_camel": obj.get("smallCamel"),
-            "capital_camel": obj.get("CapitalCamel"),
-            "small_snake": obj.get("small_Snake"),
-            "capital_snake": obj.get("Capital_Snake"),
-            "sca_eth_flow_points": obj.get("SCA_ETH_Flow_Points"),
-            "att_name": obj.get("ATT_NAME")
+            "smallCamel": obj.get("smallCamel"),
+            "CapitalCamel": obj.get("CapitalCamel"),
+            "small_Snake": obj.get("small_Snake"),
+            "Capital_Snake": obj.get("Capital_Snake"),
+            "SCA_ETH_Flow_Points": obj.get("SCA_ETH_Flow_Points"),
+            "ATT_NAME": obj.get("ATT_NAME")
         })
         return _obj
 

samples/openapi3/client/petstore/python-aiohttp/petstore_api/models/cat.py

@@ -40,6 +40,7 @@ class Cat(Animal):
 
     def to_json(self) -> str:
         """Returns the JSON representation of the model using alias"""
+        # TODO: pydantic v2: use .model_dump_json(by_alias=True, exclude_unset=True) instead
         return json.dumps(self.to_dict())
 
     @classmethod
@@ -65,7 +66,7 @@ class Cat(Animal):
             return Cat.parse_obj(obj)
 
         _obj = Cat.parse_obj({
-            "class_name": obj.get("className"),
+            "className": obj.get("className"),
             "color": obj.get("color") if obj.get("color") is not None else 'red',
             "declawed": obj.get("declawed")
         })

samples/openapi3/client/petstore/python-aiohttp/petstore_api/models/category.py

@@ -19,14 +19,14 @@ import json
 
 
 from typing import Optional
-from pydantic import BaseModel, Field, StrictInt, StrictStr
+from pydantic import BaseModel, StrictInt, StrictStr
 
 class Category(BaseModel):
     """
     Category
     """
     id: Optional[StrictInt] = None
-    name: StrictStr = Field(...)
+    name: StrictStr
     __properties = ["id", "name"]
 
     class Config:
@@ -40,6 +40,7 @@ class Category(BaseModel):
 
     def to_json(self) -> str:
         """Returns the JSON representation of the model using alias"""
+        # TODO: pydantic v2: use .model_dump_json(by_alias=True, exclude_unset=True) instead
         return json.dumps(self.to_dict())
 
     @classmethod

samples/openapi3/client/petstore/python-aiohttp/petstore_api/models/circular_reference_model.py

@@ -40,6 +40,7 @@ class CircularReferenceModel(BaseModel):
 
     def to_json(self) -> str:
         """Returns the JSON representation of the model using alias"""
+        # TODO: pydantic v2: use .model_dump_json(by_alias=True, exclude_unset=True) instead
         return json.dumps(self.to_dict())
 
     @classmethod
@@ -74,5 +75,9 @@ class CircularReferenceModel(BaseModel):
         return _obj
 
 from petstore_api.models.first_ref import FirstRef
-CircularReferenceModel.update_forward_refs()
+from typing import TYPE_CHECKING
+if TYPE_CHECKING:
+    # TODO: pydantic v2
+    # CircularReferenceModel.model_rebuild()
+    pass
 

samples/openapi3/client/petstore/python-aiohttp/petstore_api/models/class_model.py

@@ -19,13 +19,14 @@ import json
 
 
 from typing import Optional
-from pydantic import BaseModel, Field, StrictStr
+from pydantic import BaseModel, StrictStr
+from pydantic import Field
 
 class ClassModel(BaseModel):
     """
     Model for testing model with \"_class\" property  # noqa: E501
     """
-    var_class: Optional[StrictStr] = Field(None, alias="_class")
+    var_class: Optional[StrictStr] = Field(default=None, alias="_class")
     __properties = ["_class"]
 
     class Config:
@@ -39,6 +40,7 @@ class ClassModel(BaseModel):
 
     def to_json(self) -> str:
         """Returns the JSON representation of the model using alias"""
+        # TODO: pydantic v2: use .model_dump_json(by_alias=True, exclude_unset=True) instead
         return json.dumps(self.to_dict())
 
     @classmethod
@@ -64,7 +66,7 @@ class ClassModel(BaseModel):
             return ClassModel.parse_obj(obj)
 
         _obj = ClassModel.parse_obj({
-            "var_class": obj.get("_class")
+            "_class": obj.get("_class")
         })
         return _obj
 

samples/openapi3/client/petstore/python-aiohttp/petstore_api/models/client.py

@@ -39,6 +39,7 @@ class Client(BaseModel):
 
     def to_json(self) -> str:
         """Returns the JSON representation of the model using alias"""
+        # TODO: pydantic v2: use .model_dump_json(by_alias=True, exclude_unset=True) instead
         return json.dumps(self.to_dict())
 
     @classmethod

samples/openapi3/client/petstore/python-aiohttp/petstore_api/models/color.py

@@ -19,8 +19,11 @@ import pprint
 import re  # noqa: F401
 
 from typing import Any, List, Optional
-from pydantic import BaseModel, Field, StrictStr, ValidationError, conint, conlist, constr, validator
-from typing import Union, Any, List, TYPE_CHECKING
+from pydantic import BaseModel, Field, StrictStr, ValidationError, validator
+from pydantic import Field
+from typing_extensions import Annotated
+from typing import Union, Any, List, TYPE_CHECKING, Optional, Dict
+from typing_extensions import Literal
 from pydantic import StrictStr, Field
 
 COLOR_ONE_OF_SCHEMAS = ["List[int]", "str"]
@@ -30,16 +33,13 @@ class Color(BaseModel):
     RGB array, RGBA array, or hex string.
     """
     # data type: List[int]
-    oneof_schema_1_validator: Optional[conlist(conint(strict=True, le=255, ge=0), max_items=3, min_items=3)] = Field(None, description="RGB three element array with values 0-255.")
+    oneof_schema_1_validator: Optional[Annotated[List[Annotated[int, Field(le=255, strict=True, ge=0)]], Field(min_items=3, max_items=3)]] = Field(default=None, description="RGB three element array with values 0-255.")
     # data type: List[int]
-    oneof_schema_2_validator: Optional[conlist(conint(strict=True, le=255, ge=0), max_items=4, min_items=4)] = Field(None, description="RGBA four element array with values 0-255.")
+    oneof_schema_2_validator: Optional[Annotated[List[Annotated[int, Field(le=255, strict=True, ge=0)]], Field(min_items=4, max_items=4)]] = Field(default=None, description="RGBA four element array with values 0-255.")
     # data type: str
-    oneof_schema_3_validator: Optional[constr(strict=True, max_length=7, min_length=7)] = Field(None, description="Hex color string, such as #00FF00.")
-    if TYPE_CHECKING:
-        actual_instance: Union[List[int], str]
-    else:
-        actual_instance: Any
-    one_of_schemas: List[str] = Field(COLOR_ONE_OF_SCHEMAS, const=True)
+    oneof_schema_3_validator: Optional[Annotated[str, Field(min_length=7, strict=True, max_length=7)]] = Field(default=None, description="Hex color string, such as #00FF00.")
+    actual_instance: Optional[Union[List[int], str]] = None
+    one_of_schemas: List[str] = Literal[COLOR_ONE_OF_SCHEMAS]
 
     class Config:
         validate_assignment = True

samples/openapi3/client/petstore/python-aiohttp/petstore_api/models/creature.py

@@ -19,15 +19,15 @@ import json
 
 
 
-from pydantic import BaseModel, Field, StrictStr
+from pydantic import BaseModel, StrictStr
 from petstore_api.models.creature_info import CreatureInfo
 
 class Creature(BaseModel):
     """
     Creature
     """
-    info: CreatureInfo = Field(...)
-    type: StrictStr = Field(...)
+    info: CreatureInfo
+    type: StrictStr
     __properties = ["info", "type"]
 
     class Config:
@@ -41,6 +41,7 @@ class Creature(BaseModel):
 
     def to_json(self) -> str:
         """Returns the JSON representation of the model using alias"""
+        # TODO: pydantic v2: use .model_dump_json(by_alias=True, exclude_unset=True) instead
         return json.dumps(self.to_dict())
 
     @classmethod

samples/openapi3/client/petstore/python-aiohttp/petstore_api/models/creature_info.py

@@ -19,13 +19,13 @@ import json
 
 
 
-from pydantic import BaseModel, Field, StrictStr
+from pydantic import BaseModel, StrictStr
 
 class CreatureInfo(BaseModel):
     """
     CreatureInfo
     """
-    name: StrictStr = Field(...)
+    name: StrictStr
     __properties = ["name"]
 
     class Config:
@@ -39,6 +39,7 @@ class CreatureInfo(BaseModel):
 
     def to_json(self) -> str:
         """Returns the JSON representation of the model using alias"""
+        # TODO: pydantic v2: use .model_dump_json(by_alias=True, exclude_unset=True) instead
         return json.dumps(self.to_dict())
 
     @classmethod

samples/openapi3/client/petstore/python-aiohttp/petstore_api/models/danish_pig.py

@@ -19,14 +19,15 @@ import json
 
 
 
-from pydantic import BaseModel, Field, StrictInt, StrictStr
+from pydantic import BaseModel, StrictInt, StrictStr
+from pydantic import Field
 
 class DanishPig(BaseModel):
     """
     DanishPig
     """
-    class_name: StrictStr = Field(..., alias="className")
-    size: StrictInt = Field(...)
+    class_name: StrictStr = Field(alias="className")
+    size: StrictInt
     __properties = ["className", "size"]
 
     class Config:
@@ -40,6 +41,7 @@ class DanishPig(BaseModel):
 
     def to_json(self) -> str:
         """Returns the JSON representation of the model using alias"""
+        # TODO: pydantic v2: use .model_dump_json(by_alias=True, exclude_unset=True) instead
         return json.dumps(self.to_dict())
 
     @classmethod
@@ -65,7 +67,7 @@ class DanishPig(BaseModel):
             return DanishPig.parse_obj(obj)
 
         _obj = DanishPig.parse_obj({
-            "class_name": obj.get("className"),
+            "className": obj.get("className"),
             "size": obj.get("size")
         })
         return _obj

samples/openapi3/client/petstore/python-aiohttp/petstore_api/models/deprecated_object.py

@@ -39,6 +39,7 @@ class DeprecatedObject(BaseModel):
 
     def to_json(self) -> str:
         """Returns the JSON representation of the model using alias"""
+        # TODO: pydantic v2: use .model_dump_json(by_alias=True, exclude_unset=True) instead
         return json.dumps(self.to_dict())
 
     @classmethod

samples/openapi3/client/petstore/python-aiohttp/petstore_api/models/dog.py

@@ -40,6 +40,7 @@ class Dog(Animal):
 
     def to_json(self) -> str:
         """Returns the JSON representation of the model using alias"""
+        # TODO: pydantic v2: use .model_dump_json(by_alias=True, exclude_unset=True) instead
         return json.dumps(self.to_dict())
 
     @classmethod
@@ -65,7 +66,7 @@ class Dog(Animal):
             return Dog.parse_obj(obj)
 
         _obj = Dog.parse_obj({
-            "class_name": obj.get("className"),
+            "className": obj.get("className"),
             "color": obj.get("color") if obj.get("color") is not None else 'red',
             "breed": obj.get("breed")
         })

samples/openapi3/client/petstore/python-aiohttp/petstore_api/models/dummy_model.py

@@ -40,6 +40,7 @@ class DummyModel(BaseModel):
 
     def to_json(self) -> str:
         """Returns the JSON representation of the model using alias"""
+        # TODO: pydantic v2: use .model_dump_json(by_alias=True, exclude_unset=True) instead
         return json.dumps(self.to_dict())
 
     @classmethod
@@ -74,5 +75,9 @@ class DummyModel(BaseModel):
         return _obj
 
 from petstore_api.models.self_reference_model import SelfReferenceModel
-DummyModel.update_forward_refs()
+from typing import TYPE_CHECKING
+if TYPE_CHECKING:
+    # TODO: pydantic v2
+    # DummyModel.model_rebuild()
+    pass
 

samples/openapi3/client/petstore/python-aiohttp/petstore_api/models/enum_arrays.py

@@ -19,14 +19,14 @@ import json
 
 
 from typing import List, Optional
-from pydantic import BaseModel, StrictStr, conlist, validator
+from pydantic import BaseModel, StrictStr, validator
 
 class EnumArrays(BaseModel):
     """
     EnumArrays
     """
     just_symbol: Optional[StrictStr] = None
-    array_enum: Optional[conlist(StrictStr)] = None
+    array_enum: Optional[List[StrictStr]] = None
     __properties = ["just_symbol", "array_enum"]
 
     @validator('just_symbol')
@@ -61,6 +61,7 @@ class EnumArrays(BaseModel):
 
     def to_json(self) -> str:
         """Returns the JSON representation of the model using alias"""
+        # TODO: pydantic v2: use .model_dump_json(by_alias=True, exclude_unset=True) instead
         return json.dumps(self.to_dict())
 
     @classmethod

samples/openapi3/client/petstore/python-aiohttp/petstore_api/models/enum_test.py

@@ -19,7 +19,8 @@ import json
 
 
 from typing import Optional
-from pydantic import BaseModel, Field, StrictInt, StrictStr, validator
+from pydantic import BaseModel, StrictInt, StrictStr, validator
+from pydantic import Field
 from petstore_api.models.outer_enum import OuterEnum
 from petstore_api.models.outer_enum_default_value import OuterEnumDefaultValue
 from petstore_api.models.outer_enum_integer import OuterEnumInteger
@@ -30,14 +31,14 @@ class EnumTest(BaseModel):
     EnumTest
     """
     enum_string: Optional[StrictStr] = None
-    enum_string_required: StrictStr = Field(...)
+    enum_string_required: StrictStr
     enum_integer_default: Optional[StrictInt] = 5
     enum_integer: Optional[StrictInt] = None
     enum_number: Optional[float] = None
-    outer_enum: Optional[OuterEnum] = Field(None, alias="outerEnum")
-    outer_enum_integer: Optional[OuterEnumInteger] = Field(None, alias="outerEnumInteger")
-    outer_enum_default_value: Optional[OuterEnumDefaultValue] = Field(None, alias="outerEnumDefaultValue")
-    outer_enum_integer_default_value: Optional[OuterEnumIntegerDefaultValue] = Field(None, alias="outerEnumIntegerDefaultValue")
+    outer_enum: Optional[OuterEnum] = Field(default=None, alias="outerEnum")
+    outer_enum_integer: Optional[OuterEnumInteger] = Field(default=None, alias="outerEnumInteger")
+    outer_enum_default_value: Optional[OuterEnumDefaultValue] = Field(default=None, alias="outerEnumDefaultValue")
+    outer_enum_integer_default_value: Optional[OuterEnumIntegerDefaultValue] = Field(default=None, alias="outerEnumIntegerDefaultValue")
     __properties = ["enum_string", "enum_string_required", "enum_integer_default", "enum_integer", "enum_number", "outerEnum", "outerEnumInteger", "outerEnumDefaultValue", "outerEnumIntegerDefaultValue"]
 
     @validator('enum_string')
@@ -98,6 +99,7 @@ class EnumTest(BaseModel):
 
     def to_json(self) -> str:
         """Returns the JSON representation of the model using alias"""
+        # TODO: pydantic v2: use .model_dump_json(by_alias=True, exclude_unset=True) instead
         return json.dumps(self.to_dict())
 
     @classmethod
@@ -133,10 +135,10 @@ class EnumTest(BaseModel):
             "enum_integer_default": obj.get("enum_integer_default") if obj.get("enum_integer_default") is not None else 5,
             "enum_integer": obj.get("enum_integer"),
             "enum_number": obj.get("enum_number"),
-            "outer_enum": obj.get("outerEnum"),
-            "outer_enum_integer": obj.get("outerEnumInteger"),
-            "outer_enum_default_value": obj.get("outerEnumDefaultValue"),
-            "outer_enum_integer_default_value": obj.get("outerEnumIntegerDefaultValue")
+            "outerEnum": obj.get("outerEnum"),
+            "outerEnumInteger": obj.get("outerEnumInteger"),
+            "outerEnumDefaultValue": obj.get("outerEnumDefaultValue"),
+            "outerEnumIntegerDefaultValue": obj.get("outerEnumIntegerDefaultValue")
         })
         return _obj
 

samples/openapi3/client/petstore/python-aiohttp/petstore_api/models/file.py

@@ -19,13 +19,14 @@ import json
 
 
 from typing import Optional
-from pydantic import BaseModel, Field, StrictStr
+from pydantic import BaseModel, StrictStr
+from pydantic import Field
 
 class File(BaseModel):
     """
     Must be named `File` for test.  # noqa: E501
     """
-    source_uri: Optional[StrictStr] = Field(None, alias="sourceURI", description="Test capitalization")
+    source_uri: Optional[StrictStr] = Field(default=None, description="Test capitalization", alias="sourceURI")
     __properties = ["sourceURI"]
 
     class Config:
@@ -39,6 +40,7 @@ class File(BaseModel):
 
     def to_json(self) -> str:
         """Returns the JSON representation of the model using alias"""
+        # TODO: pydantic v2: use .model_dump_json(by_alias=True, exclude_unset=True) instead
         return json.dumps(self.to_dict())
 
     @classmethod
@@ -64,7 +66,7 @@ class File(BaseModel):
             return File.parse_obj(obj)
 
         _obj = File.parse_obj({
-            "source_uri": obj.get("sourceURI")
+            "sourceURI": obj.get("sourceURI")
         })
         return _obj
 

samples/openapi3/client/petstore/python-aiohttp/petstore_api/models/file_schema_test_class.py

@@ -19,7 +19,7 @@ import json
 
 
 from typing import List, Optional
-from pydantic import BaseModel, conlist
+from pydantic import BaseModel
 from petstore_api.models.file import File
 
 class FileSchemaTestClass(BaseModel):
@@ -27,7 +27,7 @@ class FileSchemaTestClass(BaseModel):
     FileSchemaTestClass
     """
     file: Optional[File] = None
-    files: Optional[conlist(File)] = None
+    files: Optional[List[File]] = None
     __properties = ["file", "files"]
 
     class Config:
@@ -41,6 +41,7 @@ class FileSchemaTestClass(BaseModel):
 
     def to_json(self) -> str:
         """Returns the JSON representation of the model using alias"""
+        # TODO: pydantic v2: use .model_dump_json(by_alias=True, exclude_unset=True) instead
         return json.dumps(self.to_dict())
 
     @classmethod

samples/openapi3/client/petstore/python-aiohttp/petstore_api/models/first_ref.py

@@ -40,6 +40,7 @@ class FirstRef(BaseModel):
 
     def to_json(self) -> str:
         """Returns the JSON representation of the model using alias"""
+        # TODO: pydantic v2: use .model_dump_json(by_alias=True, exclude_unset=True) instead
         return json.dumps(self.to_dict())
 
     @classmethod
@@ -74,5 +75,9 @@ class FirstRef(BaseModel):
         return _obj
 
 from petstore_api.models.second_ref import SecondRef
-FirstRef.update_forward_refs()
+from typing import TYPE_CHECKING
+if TYPE_CHECKING:
+    # TODO: pydantic v2
+    # FirstRef.model_rebuild()
+    pass
 

samples/openapi3/client/petstore/python-aiohttp/petstore_api/models/foo.py

@@ -39,6 +39,7 @@ class Foo(BaseModel):
 
     def to_json(self) -> str:
         """Returns the JSON representation of the model using alias"""
+        # TODO: pydantic v2: use .model_dump_json(by_alias=True, exclude_unset=True) instead
         return json.dumps(self.to_dict())
 
     @classmethod

samples/openapi3/client/petstore/python-aiohttp/petstore_api/models/foo_get_default_response.py

@@ -40,6 +40,7 @@ class FooGetDefaultResponse(BaseModel):
 
     def to_json(self) -> str:
         """Returns the JSON representation of the model using alias"""
+        # TODO: pydantic v2: use .model_dump_json(by_alias=True, exclude_unset=True) instead
         return json.dumps(self.to_dict())
 
     @classmethod

samples/openapi3/client/petstore/python-aiohttp/petstore_api/models/format_test.py

@@ -19,30 +19,32 @@ import json
 
 from datetime import date, datetime
 from typing import Optional, Union
-from pydantic import BaseModel, Field, StrictBytes, StrictInt, StrictStr, condecimal, confloat, conint, constr, validator
+from pydantic import BaseModel, StrictBytes, StrictInt, StrictStr, validator
+from decimal import Decimal
+from pydantic import Field
+from typing_extensions import Annotated
 
 class FormatTest(BaseModel):
     """
     FormatTest
     """
-    integer: Optional[conint(strict=True, le=100, ge=10)] = None
-    int32: Optional[conint(strict=True, le=200, ge=20)] = None
+    integer: Optional[Annotated[int, Field(le=100, strict=True, ge=10)]] = None
+    int32: Optional[Annotated[int, Field(le=200, strict=True, ge=20)]] = None
     int64: Optional[StrictInt] = None
-    number: confloat(le=543.2, ge=32.1) = Field(...)
-    float: Optional[confloat(le=987.6, ge=54.3)] = None
-    double: Optional[confloat(le=123.4, ge=67.8)] = None
-    decimal: Optional[condecimal()] = None
-    string: Optional[constr(strict=True)] = None
-    string_with_double_quote_pattern: Optional[constr(strict=True)] = None
+    number: Annotated[float, Field(le=543.2, ge=32.1)]
+    double: Optional[Annotated[float, Field(le=123.4, ge=67.8)]] = None
+    decimal: Optional[Decimal] = None
+    string: Optional[Annotated[str, Field(strict=True)]] = None
+    string_with_double_quote_pattern: Optional[Annotated[str, Field(strict=True)]] = None
     byte: Optional[Union[StrictBytes, StrictStr]] = None
     binary: Optional[Union[StrictBytes, StrictStr]] = None
-    var_date: date = Field(..., alias="date")
-    date_time: Optional[datetime] = Field(None, alias="dateTime")
+    var_date: date = Field(alias="date")
+    date_time: Optional[datetime] = Field(default=None, alias="dateTime")
     uuid: Optional[StrictStr] = None
-    password: constr(strict=True, max_length=64, min_length=10) = Field(...)
-    pattern_with_digits: Optional[constr(strict=True)] = Field(None, description="A string that is a 10 digit number. Can have leading zeros.")
-    pattern_with_digits_and_delimiter: Optional[constr(strict=True)] = Field(None, description="A string starting with 'image_' (case insensitive) and one to three digits following i.e. Image_01.")
-    __properties = ["integer", "int32", "int64", "number", "float", "double", "decimal", "string", "string_with_double_quote_pattern", "byte", "binary", "date", "dateTime", "uuid", "password", "pattern_with_digits", "pattern_with_digits_and_delimiter"]
+    password: Annotated[str, Field(min_length=10, strict=True, max_length=64)]
+    pattern_with_digits: Optional[Annotated[str, Field(strict=True)]] = Field(default=None, description="A string that is a 10 digit number. Can have leading zeros.")
+    pattern_with_digits_and_delimiter: Optional[Annotated[str, Field(strict=True)]] = Field(default=None, description="A string starting with 'image_' (case insensitive) and one to three digits following i.e. Image_01.")
+    __properties = ["integer", "int32", "int64", "number", "double", "decimal", "string", "string_with_double_quote_pattern", "byte", "binary", "date", "dateTime", "uuid", "password", "pattern_with_digits", "pattern_with_digits_and_delimiter"]
 
     @validator('string')
     def string_validate_regular_expression(cls, value):
@@ -95,6 +97,7 @@ class FormatTest(BaseModel):
 
     def to_json(self) -> str:
         """Returns the JSON representation of the model using alias"""
+        # TODO: pydantic v2: use .model_dump_json(by_alias=True, exclude_unset=True) instead
         return json.dumps(self.to_dict())
 
     @classmethod
@@ -124,15 +127,14 @@ class FormatTest(BaseModel):
             "int32": obj.get("int32"),
             "int64": obj.get("int64"),
             "number": obj.get("number"),
-            "float": obj.get("float"),
             "double": obj.get("double"),
             "decimal": obj.get("decimal"),
             "string": obj.get("string"),
             "string_with_double_quote_pattern": obj.get("string_with_double_quote_pattern"),
             "byte": obj.get("byte"),
             "binary": obj.get("binary"),
-            "var_date": obj.get("date"),
-            "date_time": obj.get("dateTime"),
+            "date": obj.get("date"),
+            "dateTime": obj.get("dateTime"),
             "uuid": obj.get("uuid"),
             "password": obj.get("password"),
             "pattern_with_digits": obj.get("pattern_with_digits"),

samples/openapi3/client/petstore/python-aiohttp/petstore_api/models/has_only_read_only.py

@@ -40,6 +40,7 @@ class HasOnlyReadOnly(BaseModel):
 
     def to_json(self) -> str:
         """Returns the JSON representation of the model using alias"""
+        # TODO: pydantic v2: use .model_dump_json(by_alias=True, exclude_unset=True) instead
         return json.dumps(self.to_dict())
 
     @classmethod

samples/openapi3/client/petstore/python-aiohttp/petstore_api/models/health_check_result.py

@@ -19,13 +19,14 @@ import json
 
 
 from typing import Optional
-from pydantic import BaseModel, Field, StrictStr
+from pydantic import BaseModel, StrictStr
+from pydantic import Field
 
 class HealthCheckResult(BaseModel):
     """
     Just a string to inform instance is up and running. Make it nullable in hope to get it as pointer in generated model.  # noqa: E501
     """
-    nullable_message: Optional[StrictStr] = Field(None, alias="NullableMessage")
+    nullable_message: Optional[StrictStr] = Field(default=None, alias="NullableMessage")
     __properties = ["NullableMessage"]
 
     class Config:
@@ -39,6 +40,7 @@ class HealthCheckResult(BaseModel):
 
     def to_json(self) -> str:
         """Returns the JSON representation of the model using alias"""
+        # TODO: pydantic v2: use .model_dump_json(by_alias=True, exclude_unset=True) instead
         return json.dumps(self.to_dict())
 
     @classmethod
@@ -69,7 +71,7 @@ class HealthCheckResult(BaseModel):
             return HealthCheckResult.parse_obj(obj)
 
         _obj = HealthCheckResult.parse_obj({
-            "nullable_message": obj.get("NullableMessage")
+            "NullableMessage": obj.get("NullableMessage")
         })
         return _obj
 

samples/openapi3/client/petstore/python-aiohttp/petstore_api/models/inner_dict_with_property.py

@@ -18,14 +18,15 @@ import re  # noqa: F401
 import json
 
 
-from typing import Any, Dict, Optional
-from pydantic import BaseModel, Field
+from typing import Any, Dict, Optional, Union
+from pydantic import BaseModel
+from pydantic import Field
 
 class InnerDictWithProperty(BaseModel):
     """
     InnerDictWithProperty
     """
-    a_property: Optional[Dict[str, Any]] = Field(None, alias="aProperty")
+    a_property: Optional[Union[str, Any]] = Field(default=None, alias="aProperty")
     __properties = ["aProperty"]
 
     class Config:
@@ -39,6 +40,7 @@ class InnerDictWithProperty(BaseModel):
 
     def to_json(self) -> str:
         """Returns the JSON representation of the model using alias"""
+        # TODO: pydantic v2: use .model_dump_json(by_alias=True, exclude_unset=True) instead
         return json.dumps(self.to_dict())
 
     @classmethod
@@ -64,7 +66,7 @@ class InnerDictWithProperty(BaseModel):
             return InnerDictWithProperty.parse_obj(obj)
 
         _obj = InnerDictWithProperty.parse_obj({
-            "a_property": obj.get("aProperty")
+            "aProperty": obj.get("aProperty")
         })
         return _obj
 

samples/openapi3/client/petstore/python-aiohttp/petstore_api/models/int_or_string.py

@@ -19,8 +19,11 @@ import pprint
 import re  # noqa: F401
 
 from typing import Any, List, Optional
-from pydantic import BaseModel, Field, StrictStr, ValidationError, conint, validator
-from typing import Union, Any, List, TYPE_CHECKING
+from pydantic import BaseModel, Field, StrictStr, ValidationError, validator
+from pydantic import Field
+from typing_extensions import Annotated
+from typing import Union, Any, List, TYPE_CHECKING, Optional, Dict
+from typing_extensions import Literal
 from pydantic import StrictStr, Field
 
 INTORSTRING_ONE_OF_SCHEMAS = ["int", "str"]
@@ -30,14 +33,11 @@ class IntOrString(BaseModel):
     IntOrString
     """
     # data type: int
-    oneof_schema_1_validator: Optional[conint(strict=True, ge=10)] = None
+    oneof_schema_1_validator: Optional[Annotated[int, Field(strict=True, ge=10)]] = None
     # data type: str
     oneof_schema_2_validator: Optional[StrictStr] = None
-    if TYPE_CHECKING:
-        actual_instance: Union[int, str]
-    else:
-        actual_instance: Any
-    one_of_schemas: List[str] = Field(INTORSTRING_ONE_OF_SCHEMAS, const=True)
+    actual_instance: Optional[Union[int, str]] = None
+    one_of_schemas: List[str] = Literal[INTORSTRING_ONE_OF_SCHEMAS]
 
     class Config:
         validate_assignment = True

samples/openapi3/client/petstore/python-aiohttp/petstore_api/models/list.py

@@ -19,13 +19,14 @@ import json
 
 
 from typing import Optional
-from pydantic import BaseModel, Field, StrictStr
+from pydantic import BaseModel, StrictStr
+from pydantic import Field
 
 class List(BaseModel):
     """
     List
     """
-    var_123_list: Optional[StrictStr] = Field(None, alias="123-list")
+    var_123_list: Optional[StrictStr] = Field(default=None, alias="123-list")
     __properties = ["123-list"]
 
     class Config:
@@ -39,6 +40,7 @@ class List(BaseModel):
 
     def to_json(self) -> str:
         """Returns the JSON representation of the model using alias"""
+        # TODO: pydantic v2: use .model_dump_json(by_alias=True, exclude_unset=True) instead
         return json.dumps(self.to_dict())
 
     @classmethod
@@ -64,7 +66,7 @@ class List(BaseModel):
             return List.parse_obj(obj)
 
         _obj = List.parse_obj({
-            "var_123_list": obj.get("123-list")
+            "123-list": obj.get("123-list")
         })
         return _obj
 

samples/openapi3/client/petstore/python-aiohttp/petstore_api/models/map_of_array_of_model.py

@@ -19,14 +19,15 @@ import json
 
 
 from typing import Dict, List, Optional
-from pydantic import BaseModel, Field, conlist
+from pydantic import BaseModel
+from pydantic import Field
 from petstore_api.models.tag import Tag
 
 class MapOfArrayOfModel(BaseModel):
     """
     MapOfArrayOfModel
     """
-    shop_id_to_org_online_lip_map: Optional[Dict[str, conlist(Tag)]] = Field(None, alias="shopIdToOrgOnlineLipMap")
+    shop_id_to_org_online_lip_map: Optional[Dict[str, List[Tag]]] = Field(default=None, alias="shopIdToOrgOnlineLipMap")
     __properties = ["shopIdToOrgOnlineLipMap"]
 
     class Config:
@@ -40,6 +41,7 @@ class MapOfArrayOfModel(BaseModel):
 
     def to_json(self) -> str:
         """Returns the JSON representation of the model using alias"""
+        # TODO: pydantic v2: use .model_dump_json(by_alias=True, exclude_unset=True) instead
         return json.dumps(self.to_dict())
 
     @classmethod
@@ -74,7 +76,7 @@ class MapOfArrayOfModel(BaseModel):
             return MapOfArrayOfModel.parse_obj(obj)
 
         _obj = MapOfArrayOfModel.parse_obj({
-            "shop_id_to_org_online_lip_map": dict(
+            "shopIdToOrgOnlineLipMap": dict(
                 (_k,
                         [Tag.from_dict(_item) for _item in _v]
                         if _v is not None

samples/openapi3/client/petstore/python-aiohttp/petstore_api/models/map_test.py

@@ -52,6 +52,7 @@ class MapTest(BaseModel):
 
     def to_json(self) -> str:
         """Returns the JSON representation of the model using alias"""
+        # TODO: pydantic v2: use .model_dump_json(by_alias=True, exclude_unset=True) instead
         return json.dumps(self.to_dict())
 
     @classmethod

samples/openapi3/client/petstore/python-aiohttp/petstore_api/models/mixed_properties_and_additional_properties_class.py

@@ -19,7 +19,8 @@ import json
 
 from datetime import datetime
 from typing import Dict, Optional
-from pydantic import BaseModel, Field, StrictStr
+from pydantic import BaseModel, StrictStr
+from pydantic import Field
 from petstore_api.models.animal import Animal
 
 class MixedPropertiesAndAdditionalPropertiesClass(BaseModel):
@@ -27,7 +28,7 @@ class MixedPropertiesAndAdditionalPropertiesClass(BaseModel):
     MixedPropertiesAndAdditionalPropertiesClass
     """
     uuid: Optional[StrictStr] = None
-    date_time: Optional[datetime] = Field(None, alias="dateTime")
+    date_time: Optional[datetime] = Field(default=None, alias="dateTime")
     map: Optional[Dict[str, Animal]] = None
     __properties = ["uuid", "dateTime", "map"]
 
@@ -42,6 +43,7 @@ class MixedPropertiesAndAdditionalPropertiesClass(BaseModel):
 
     def to_json(self) -> str:
         """Returns the JSON representation of the model using alias"""
+        # TODO: pydantic v2: use .model_dump_json(by_alias=True, exclude_unset=True) instead
         return json.dumps(self.to_dict())
 
     @classmethod
@@ -75,7 +77,7 @@ class MixedPropertiesAndAdditionalPropertiesClass(BaseModel):
 
         _obj = MixedPropertiesAndAdditionalPropertiesClass.parse_obj({
             "uuid": obj.get("uuid"),
-            "date_time": obj.get("dateTime"),
+            "dateTime": obj.get("dateTime"),
             "map": dict(
                 (_k, Animal.from_dict(_v))
                 for _k, _v in obj.get("map").items()

samples/openapi3/client/petstore/python-aiohttp/petstore_api/models/model200_response.py

@@ -19,14 +19,15 @@ import json
 
 
 from typing import Optional
-from pydantic import BaseModel, Field, StrictInt, StrictStr
+from pydantic import BaseModel, StrictInt, StrictStr
+from pydantic import Field
 
 class Model200Response(BaseModel):
     """
     Model for testing model name starting with number  # noqa: E501
     """
     name: Optional[StrictInt] = None
-    var_class: Optional[StrictStr] = Field(None, alias="class")
+    var_class: Optional[StrictStr] = Field(default=None, alias="class")
     __properties = ["name", "class"]
 
     class Config:
@@ -40,6 +41,7 @@ class Model200Response(BaseModel):
 
     def to_json(self) -> str:
         """Returns the JSON representation of the model using alias"""
+        # TODO: pydantic v2: use .model_dump_json(by_alias=True, exclude_unset=True) instead
         return json.dumps(self.to_dict())
 
     @classmethod
@@ -66,7 +68,7 @@ class Model200Response(BaseModel):
 
         _obj = Model200Response.parse_obj({
             "name": obj.get("name"),
-            "var_class": obj.get("class")
+            "class": obj.get("class")
         })
         return _obj
 

samples/openapi3/client/petstore/python-aiohttp/petstore_api/models/model_return.py

@@ -19,13 +19,14 @@ import json
 
 
 from typing import Optional
-from pydantic import BaseModel, Field, StrictInt
+from pydantic import BaseModel, StrictInt
+from pydantic import Field
 
 class ModelReturn(BaseModel):
     """
     Model for testing reserved words  # noqa: E501
     """
-    var_return: Optional[StrictInt] = Field(None, alias="return")
+    var_return: Optional[StrictInt] = Field(default=None, alias="return")
     __properties = ["return"]
 
     class Config:
@@ -39,6 +40,7 @@ class ModelReturn(BaseModel):
 
     def to_json(self) -> str:
         """Returns the JSON representation of the model using alias"""
+        # TODO: pydantic v2: use .model_dump_json(by_alias=True, exclude_unset=True) instead
         return json.dumps(self.to_dict())
 
     @classmethod
@@ -64,7 +66,7 @@ class ModelReturn(BaseModel):
             return ModelReturn.parse_obj(obj)
 
         _obj = ModelReturn.parse_obj({
-            "var_return": obj.get("return")
+            "return": obj.get("return")
         })
         return _obj
 

samples/openapi3/client/petstore/python-aiohttp/petstore_api/models/name.py

@@ -19,16 +19,17 @@ import json
 
 
 from typing import Optional
-from pydantic import BaseModel, Field, StrictInt, StrictStr
+from pydantic import BaseModel, StrictInt, StrictStr
+from pydantic import Field
 
 class Name(BaseModel):
     """
     Model for testing model name same as property name  # noqa: E501
     """
-    name: StrictInt = Field(...)
+    name: StrictInt
     snake_case: Optional[StrictInt] = None
-    var_property: Optional[StrictStr] = Field(None, alias="property")
-    var_123_number: Optional[StrictInt] = Field(None, alias="123Number")
+    var_property: Optional[StrictStr] = Field(default=None, alias="property")
+    var_123_number: Optional[StrictInt] = Field(default=None, alias="123Number")
     __properties = ["name", "snake_case", "property", "123Number"]
 
     class Config:
@@ -42,6 +43,7 @@ class Name(BaseModel):
 
     def to_json(self) -> str:
         """Returns the JSON representation of the model using alias"""
+        # TODO: pydantic v2: use .model_dump_json(by_alias=True, exclude_unset=True) instead
         return json.dumps(self.to_dict())
 
     @classmethod
@@ -71,8 +73,8 @@ class Name(BaseModel):
         _obj = Name.parse_obj({
             "name": obj.get("name"),
             "snake_case": obj.get("snake_case"),
-            "var_property": obj.get("property"),
-            "var_123_number": obj.get("123Number")
+            "property": obj.get("property"),
+            "123Number": obj.get("123Number")
         })
         return _obj
 

samples/openapi3/client/petstore/python-aiohttp/petstore_api/models/nullable_class.py

@@ -18,26 +18,26 @@ import re  # noqa: F401
 import json
 
 from datetime import date, datetime
-from typing import Any, Dict, List, Optional
-from pydantic import BaseModel, Field, StrictBool, StrictInt, StrictStr, conlist
+from typing import Any, Dict, List, Optional, Union
+from pydantic import BaseModel, StrictBool, StrictInt, StrictStr
 
 class NullableClass(BaseModel):
     """
     NullableClass
     """
-    required_integer_prop: Optional[StrictInt] = Field(...)
+    required_integer_prop: Optional[StrictInt]
     integer_prop: Optional[StrictInt] = None
     number_prop: Optional[float] = None
     boolean_prop: Optional[StrictBool] = None
     string_prop: Optional[StrictStr] = None
     date_prop: Optional[date] = None
     datetime_prop: Optional[datetime] = None
-    array_nullable_prop: Optional[conlist(Dict[str, Any])] = None
-    array_and_items_nullable_prop: Optional[conlist(Dict[str, Any])] = None
-    array_items_nullable: Optional[conlist(Dict[str, Any])] = None
-    object_nullable_prop: Optional[Dict[str, Dict[str, Any]]] = None
-    object_and_items_nullable_prop: Optional[Dict[str, Dict[str, Any]]] = None
-    object_items_nullable: Optional[Dict[str, Dict[str, Any]]] = None
+    array_nullable_prop: Optional[List[Union[str, Any]]] = None
+    array_and_items_nullable_prop: Optional[List[Union[str, Any]]] = None
+    array_items_nullable: Optional[List[Union[str, Any]]] = None
+    object_nullable_prop: Optional[Dict[str, Union[str, Any]]] = None
+    object_and_items_nullable_prop: Optional[Dict[str, Union[str, Any]]] = None
+    object_items_nullable: Optional[Dict[str, Union[str, Any]]] = None
     additional_properties: Dict[str, Any] = {}
     __properties = ["required_integer_prop", "integer_prop", "number_prop", "boolean_prop", "string_prop", "date_prop", "datetime_prop", "array_nullable_prop", "array_and_items_nullable_prop", "array_items_nullable", "object_nullable_prop", "object_and_items_nullable_prop", "object_items_nullable"]
 
@@ -52,6 +52,7 @@ class NullableClass(BaseModel):
 
     def to_json(self) -> str:
         """Returns the JSON representation of the model using alias"""
+        # TODO: pydantic v2: use .model_dump_json(by_alias=True, exclude_unset=True) instead
         return json.dumps(self.to_dict())
 
     @classmethod
@@ -154,7 +155,7 @@ class NullableClass(BaseModel):
         })
         # store additional fields in additional_properties
         for _key in obj.keys():
-            if _key not in cls.__properties:
+            if _key not in cls.__properties.default:
                 _obj.additional_properties[_key] = obj.get(_key)
 
         return _obj

samples/openapi3/client/petstore/python-aiohttp/petstore_api/models/nullable_property.py

@@ -19,14 +19,16 @@ import json
 
 
 from typing import Optional
-from pydantic import BaseModel, Field, StrictInt, constr, validator
+from pydantic import BaseModel, StrictInt, validator
+from pydantic import Field
+from typing_extensions import Annotated
 
 class NullableProperty(BaseModel):
     """
     NullableProperty
     """
-    id: StrictInt = Field(...)
-    name: Optional[constr(strict=True)] = Field(...)
+    id: StrictInt
+    name: Optional[Annotated[str, Field(strict=True)]]
     __properties = ["id", "name"]
 
     @validator('name')
@@ -50,6 +52,7 @@ class NullableProperty(BaseModel):
 
     def to_json(self) -> str:
         """Returns the JSON representation of the model using alias"""
+        # TODO: pydantic v2: use .model_dump_json(by_alias=True, exclude_unset=True) instead
         return json.dumps(self.to_dict())
 
     @classmethod

samples/openapi3/client/petstore/python-aiohttp/petstore_api/models/number_only.py

@@ -19,13 +19,14 @@ import json
 
 
 from typing import Optional
-from pydantic import BaseModel, Field
+from pydantic import BaseModel
+from pydantic import Field
 
 class NumberOnly(BaseModel):
     """
     NumberOnly
     """
-    just_number: Optional[float] = Field(None, alias="JustNumber")
+    just_number: Optional[float] = Field(default=None, alias="JustNumber")
     __properties = ["JustNumber"]
 
     class Config:
@@ -39,6 +40,7 @@ class NumberOnly(BaseModel):
 
     def to_json(self) -> str:
         """Returns the JSON representation of the model using alias"""
+        # TODO: pydantic v2: use .model_dump_json(by_alias=True, exclude_unset=True) instead
         return json.dumps(self.to_dict())
 
     @classmethod
@@ -64,7 +66,7 @@ class NumberOnly(BaseModel):
             return NumberOnly.parse_obj(obj)
 
         _obj = NumberOnly.parse_obj({
-            "just_number": obj.get("JustNumber")
+            "JustNumber": obj.get("JustNumber")
         })
         return _obj
 

samples/openapi3/client/petstore/python-aiohttp/petstore_api/models/object_to_test_additional_properties.py

@@ -19,13 +19,14 @@ import json
 
 
 from typing import Optional
-from pydantic import BaseModel, Field, StrictBool
+from pydantic import BaseModel, StrictBool
+from pydantic import Field
 
 class ObjectToTestAdditionalProperties(BaseModel):
     """
     Minimal object  # noqa: E501
     """
-    var_property: Optional[StrictBool] = Field(False, alias="property", description="Property")
+    var_property: Optional[StrictBool] = Field(default=False, description="Property", alias="property")
     __properties = ["property"]
 
     class Config:
@@ -39,6 +40,7 @@ class ObjectToTestAdditionalProperties(BaseModel):
 
     def to_json(self) -> str:
         """Returns the JSON representation of the model using alias"""
+        # TODO: pydantic v2: use .model_dump_json(by_alias=True, exclude_unset=True) instead
         return json.dumps(self.to_dict())
 
     @classmethod
@@ -64,7 +66,7 @@ class ObjectToTestAdditionalProperties(BaseModel):
             return ObjectToTestAdditionalProperties.parse_obj(obj)
 
         _obj = ObjectToTestAdditionalProperties.parse_obj({
-            "var_property": obj.get("property") if obj.get("property") is not None else False
+            "property": obj.get("property") if obj.get("property") is not None else False
         })
         return _obj
 

samples/openapi3/client/petstore/python-aiohttp/petstore_api/models/object_with_deprecated_fields.py

@@ -19,7 +19,8 @@ import json
 
 
 from typing import List, Optional
-from pydantic import BaseModel, Field, StrictStr, conlist
+from pydantic import BaseModel, StrictStr
+from pydantic import Field
 from petstore_api.models.deprecated_object import DeprecatedObject
 
 class ObjectWithDeprecatedFields(BaseModel):
@@ -28,8 +29,8 @@ class ObjectWithDeprecatedFields(BaseModel):
     """
     uuid: Optional[StrictStr] = None
     id: Optional[float] = None
-    deprecated_ref: Optional[DeprecatedObject] = Field(None, alias="deprecatedRef")
-    bars: Optional[conlist(StrictStr)] = None
+    deprecated_ref: Optional[DeprecatedObject] = Field(default=None, alias="deprecatedRef")
+    bars: Optional[List[StrictStr]] = None
     __properties = ["uuid", "id", "deprecatedRef", "bars"]
 
     class Config:
@@ -43,6 +44,7 @@ class ObjectWithDeprecatedFields(BaseModel):
 
     def to_json(self) -> str:
         """Returns the JSON representation of the model using alias"""
+        # TODO: pydantic v2: use .model_dump_json(by_alias=True, exclude_unset=True) instead
         return json.dumps(self.to_dict())
 
     @classmethod
@@ -73,7 +75,7 @@ class ObjectWithDeprecatedFields(BaseModel):
         _obj = ObjectWithDeprecatedFields.parse_obj({
             "uuid": obj.get("uuid"),
             "id": obj.get("id"),
-            "deprecated_ref": DeprecatedObject.from_dict(obj.get("deprecatedRef")) if obj.get("deprecatedRef") is not None else None,
+            "deprecatedRef": DeprecatedObject.from_dict(obj.get("deprecatedRef")) if obj.get("deprecatedRef") is not None else None,
             "bars": obj.get("bars")
         })
         return _obj

samples/openapi3/client/petstore/python-aiohttp/petstore_api/models/one_of_enum_string.py

@@ -22,7 +22,8 @@ from typing import Any, List, Optional
 from pydantic import BaseModel, Field, StrictStr, ValidationError, validator
 from petstore_api.models.enum_string1 import EnumString1
 from petstore_api.models.enum_string2 import EnumString2
-from typing import Union, Any, List, TYPE_CHECKING
+from typing import Union, Any, List, TYPE_CHECKING, Optional, Dict
+from typing_extensions import Literal
 from pydantic import StrictStr, Field
 
 ONEOFENUMSTRING_ONE_OF_SCHEMAS = ["EnumString1", "EnumString2"]
@@ -35,11 +36,8 @@ class OneOfEnumString(BaseModel):
     oneof_schema_1_validator: Optional[EnumString1] = None
     # data type: EnumString2
     oneof_schema_2_validator: Optional[EnumString2] = None
-    if TYPE_CHECKING:
-        actual_instance: Union[EnumString1, EnumString2]
-    else:
-        actual_instance: Any
-    one_of_schemas: List[str] = Field(ONEOFENUMSTRING_ONE_OF_SCHEMAS, const=True)
+    actual_instance: Optional[Union[EnumString1, EnumString2]] = None
+    one_of_schemas: List[str] = Literal[ONEOFENUMSTRING_ONE_OF_SCHEMAS]
 
     class Config:
         validate_assignment = True

samples/openapi3/client/petstore/python-aiohttp/petstore_api/models/order.py

@@ -19,17 +19,18 @@ import json
 
 from datetime import datetime
 from typing import Optional
-from pydantic import BaseModel, Field, StrictBool, StrictInt, StrictStr, validator
+from pydantic import BaseModel, StrictBool, StrictInt, StrictStr, validator
+from pydantic import Field
 
 class Order(BaseModel):
     """
     Order
     """
     id: Optional[StrictInt] = None
-    pet_id: Optional[StrictInt] = Field(None, alias="petId")
+    pet_id: Optional[StrictInt] = Field(default=None, alias="petId")
     quantity: Optional[StrictInt] = None
-    ship_date: Optional[datetime] = Field(None, alias="shipDate")
-    status: Optional[StrictStr] = Field(None, description="Order Status")
+    ship_date: Optional[datetime] = Field(default=None, alias="shipDate")
+    status: Optional[StrictStr] = Field(default=None, description="Order Status")
     complete: Optional[StrictBool] = False
     __properties = ["id", "petId", "quantity", "shipDate", "status", "complete"]
 
@@ -54,6 +55,7 @@ class Order(BaseModel):
 
     def to_json(self) -> str:
         """Returns the JSON representation of the model using alias"""
+        # TODO: pydantic v2: use .model_dump_json(by_alias=True, exclude_unset=True) instead
         return json.dumps(self.to_dict())
 
     @classmethod
@@ -80,9 +82,9 @@ class Order(BaseModel):
 
         _obj = Order.parse_obj({
             "id": obj.get("id"),
-            "pet_id": obj.get("petId"),
+            "petId": obj.get("petId"),
             "quantity": obj.get("quantity"),
-            "ship_date": obj.get("shipDate"),
+            "shipDate": obj.get("shipDate"),
             "status": obj.get("status"),
             "complete": obj.get("complete") if obj.get("complete") is not None else False
         })

samples/openapi3/client/petstore/python-aiohttp/petstore_api/models/outer_composite.py

@@ -41,6 +41,7 @@ class OuterComposite(BaseModel):
 
     def to_json(self) -> str:
         """Returns the JSON representation of the model using alias"""
+        # TODO: pydantic v2: use .model_dump_json(by_alias=True, exclude_unset=True) instead
         return json.dumps(self.to_dict())
 
     @classmethod

samples/openapi3/client/petstore/python-aiohttp/petstore_api/models/outer_object_with_enum_property.py

@@ -19,7 +19,7 @@ import json
 
 
 from typing import Optional
-from pydantic import BaseModel, Field
+from pydantic import BaseModel
 from petstore_api.models.outer_enum import OuterEnum
 from petstore_api.models.outer_enum_integer import OuterEnumInteger
 
@@ -28,7 +28,7 @@ class OuterObjectWithEnumProperty(BaseModel):
     OuterObjectWithEnumProperty
     """
     str_value: Optional[OuterEnum] = None
-    value: OuterEnumInteger = Field(...)
+    value: OuterEnumInteger
     __properties = ["str_value", "value"]
 
     class Config:
@@ -42,6 +42,7 @@ class OuterObjectWithEnumProperty(BaseModel):
 
     def to_json(self) -> str:
         """Returns the JSON representation of the model using alias"""
+        # TODO: pydantic v2: use .model_dump_json(by_alias=True, exclude_unset=True) instead
         return json.dumps(self.to_dict())
 
     @classmethod

samples/openapi3/client/petstore/python-aiohttp/petstore_api/models/parent.py

@@ -19,14 +19,15 @@ import json
 
 
 from typing import Dict, Optional
-from pydantic import BaseModel, Field
+from pydantic import BaseModel
+from pydantic import Field
 from petstore_api.models.inner_dict_with_property import InnerDictWithProperty
 
 class Parent(BaseModel):
     """
     Parent
     """
-    optional_dict: Optional[Dict[str, InnerDictWithProperty]] = Field(None, alias="optionalDict")
+    optional_dict: Optional[Dict[str, InnerDictWithProperty]] = Field(default=None, alias="optionalDict")
     __properties = ["optionalDict"]
 
     class Config:
@@ -40,6 +41,7 @@ class Parent(BaseModel):
 
     def to_json(self) -> str:
         """Returns the JSON representation of the model using alias"""
+        # TODO: pydantic v2: use .model_dump_json(by_alias=True, exclude_unset=True) instead
         return json.dumps(self.to_dict())
 
     @classmethod
@@ -72,7 +74,7 @@ class Parent(BaseModel):
             return Parent.parse_obj(obj)
 
         _obj = Parent.parse_obj({
-            "optional_dict": dict(
+            "optionalDict": dict(
                 (_k, InnerDictWithProperty.from_dict(_v))
                 for _k, _v in obj.get("optionalDict").items()
             )