[python-nextgen] better sample code (#15248)

* better python-nextgen sample code

* remove future import

* fix signing doc

* better test

* use hasHttpBearerMethods instead

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

@@ -414,6 +414,7 @@ public class PythonNextgenClientCodegen extends AbstractPythonCodegen implements
      * @param pydantic pydantic imports
      * @param datetimeImports datetime imports
      * @param modelImports model imports
+     * @param exampleImports example imports
      * @param classname class name
      * @return pydantic type
      *
@@ -423,6 +424,7 @@ public class PythonNextgenClientCodegen extends AbstractPythonCodegen implements
                                    Set<String> pydanticImports,
                                    Set<String> datetimeImports,
                                    Set<String> modelImports,
+                                   Set<String> exampleImports,
                                    String classname) {
         if (cp == null) {
             // if codegen parameter (e.g. map/dict of undefined type) is null, default to string
@@ -444,12 +446,12 @@ public class PythonNextgenClientCodegen extends AbstractPythonCodegen implements
             }
             pydanticImports.add("conlist");
             return String.format(Locale.ROOT, "conlist(%s%s)",
-                    getPydanticType(cp.items, typingImports, pydanticImports, datetimeImports, modelImports, classname),
+                    getPydanticType(cp.items, typingImports, pydanticImports, datetimeImports, modelImports, exampleImports, classname),
                     constraints);
         } else if (cp.isMap) {
             typingImports.add("Dict");
             return String.format(Locale.ROOT, "Dict[str, %s]",
-                    getPydanticType(cp.items, typingImports, pydanticImports, datetimeImports, modelImports, classname));
+                    getPydanticType(cp.items, typingImports, pydanticImports, datetimeImports, modelImports, exampleImports, classname));
         } else if (cp.isString || cp.isBinary || cp.isByteArray) {
             if (cp.hasValidation) {
                 List<String> fieldCustomization = new ArrayList<>();
@@ -643,6 +645,7 @@ public class PythonNextgenClientCodegen extends AbstractPythonCodegen implements
             // add model prefix
             hasModelsToImport = true;
             modelImports.add(cp.dataType);
+            exampleImports.add(cp.dataType);
             return cp.dataType;
         } else if (cp.getContent() != null) {
             LinkedHashMap<String, CodegenMediaType> contents = cp.getContent();
@@ -650,7 +653,7 @@ public class PythonNextgenClientCodegen extends AbstractPythonCodegen implements
                 CodegenMediaType cmt = contents.get(key);
                 // TODO process the first one only at the moment
                 if (cmt != null)
-                    return getPydanticType(cmt.getSchema(), typingImports, pydanticImports, datetimeImports, modelImports, classname);
+                    return getPydanticType(cmt.getSchema(), typingImports, pydanticImports, datetimeImports, modelImports, exampleImports, classname);
             }
             throw new RuntimeException("Error! Failed to process getPydanticType when getting the content: " + cp);
         } else {
@@ -666,6 +669,7 @@ public class PythonNextgenClientCodegen extends AbstractPythonCodegen implements
      * @param pydantic pydantic imports
      * @param datetimeImports datetime imports
      * @param modelImports model imports
+     * @param exampleImports example imports
      * @param classname class name
      * @return pydantic type
      *
@@ -675,6 +679,7 @@ public class PythonNextgenClientCodegen extends AbstractPythonCodegen implements
                                    Set<String> pydanticImports,
                                    Set<String> datetimeImports,
                                    Set<String> modelImports,
+                                   Set<String> exampleImports,
                                    String classname) {
         if (cp == null) {
             // if codegen property (e.g. map/dict of undefined type) is null, default to string
@@ -715,11 +720,11 @@ public class PythonNextgenClientCodegen extends AbstractPythonCodegen implements
             pydanticImports.add("conlist");
             typingImports.add("List"); // for return type
             return String.format(Locale.ROOT, "conlist(%s%s)",
-                    getPydanticType(cp.items, typingImports, pydanticImports, datetimeImports, modelImports, classname),
+                    getPydanticType(cp.items, typingImports, pydanticImports, datetimeImports, modelImports, exampleImports, classname),
                     constraints);
         } else if (cp.isMap) {
             typingImports.add("Dict");
-            return String.format(Locale.ROOT, "Dict[str, %s]", getPydanticType(cp.items, typingImports, pydanticImports, datetimeImports, modelImports, classname));
+            return String.format(Locale.ROOT, "Dict[str, %s]", getPydanticType(cp.items, typingImports, pydanticImports, datetimeImports, modelImports, exampleImports, classname));
         } else if (cp.isString) {
             if (cp.hasValidation) {
                 List<String> fieldCustomization = new ArrayList<>();
@@ -917,6 +922,7 @@ public class PythonNextgenClientCodegen extends AbstractPythonCodegen implements
                 // for parameter model, import directly
                 hasModelsToImport = true;
                 modelImports.add(cp.dataType);
+                exampleImports.add(cp.dataType);
             } else {
                 if (circularImports.containsKey(cp.dataType)) {
                     if (circularImports.get(cp.dataType).contains(classname)) {
@@ -926,6 +932,7 @@ public class PythonNextgenClientCodegen extends AbstractPythonCodegen implements
                         // not circular import, so ok to import it
                         hasModelsToImport = true;
                         modelImports.add(cp.dataType);
+                        exampleImports.add(cp.dataType);
                     }
                 } else {
                     LOGGER.error("Failed to look up {} from the imports (map of set) of models.", cp.dataType);
@@ -948,10 +955,11 @@ public class PythonNextgenClientCodegen extends AbstractPythonCodegen implements
         OperationMap objectMap = objs.getOperations();
         List<CodegenOperation> operations = objectMap.getOperation();
         for (CodegenOperation operation : operations) {
-
+            TreeSet<String> exampleImports = new TreeSet<>(); // import for each operation to be show in sample code
             List<CodegenParameter> params = operation.allParams;
+
             for (CodegenParameter param : params) {
-                String typing = getPydanticType(param, typingImports, pydanticImports, datetimeImports, modelImports, null);
+                String typing = getPydanticType(param, typingImports, pydanticImports, datetimeImports, modelImports, exampleImports, null);
                 List<String> fields = new ArrayList<>();
                 String firstField = "";
 
@@ -1003,9 +1011,18 @@ public class PythonNextgenClientCodegen extends AbstractPythonCodegen implements
             // update typing import for operation return type
             if (!StringUtils.isEmpty(operation.returnType)) {
                 String typing = getPydanticType(operation.returnProperty, typingImports,
-                        new TreeSet<>() /* skip pydantic import for return type */, datetimeImports, modelImports, null);
+                        new TreeSet<>() /* skip pydantic import for return type */, datetimeImports, modelImports, exampleImports, null);
             }
 
+            // add import for code samples
+            // import models one by one
+            if (!exampleImports.isEmpty()) {
+                List<String> imports = new ArrayList<>();
+                for (String exampleImport : exampleImports) {
+                    imports.add("from " + packageName + ".models." + underscore(exampleImport) + " import " + exampleImport);
+                }
+                operation.vendorExtensions.put("x-py-example-import", imports);
+            }
         }
 
         List<Map<String, String>> newImports = new ArrayList<>();
@@ -1040,21 +1057,6 @@ public class PythonNextgenClientCodegen extends AbstractPythonCodegen implements
             }
         }
 
-        /* TODO
-        // need models import
-        if (hasModelsToImport) {
-            Map<String, String> item = new HashMap<>();
-            item.put("import", String.format(Locale.ROOT, "from %s import models", packageName));
-            newImports.add(item);
-        }
-
-        // models import
-        if (hasModelsToImport) {
-            Map<String, String> item = new HashMap<>();
-            item.put("import", String.format(Locale.ROOT, "from %s import %s", modelPackage, StringUtils.join(modelImports, ", ")));
-            newImports.add(item);
-        }*/
-
         // reset imports with newImports
         objs.setImports(newImports);
         return objs;
@@ -1185,6 +1187,7 @@ public class PythonNextgenClientCodegen extends AbstractPythonCodegen implements
         TreeSet<String> modelImports = new TreeSet<>();
 
         for (ModelMap m : objs.getModels()) {
+            TreeSet<String> exampleImports = new TreeSet<>();
             List<String> readOnlyFields = new ArrayList<>();
             hasModelsToImport = false;
             int property_count = 1;
@@ -1229,7 +1232,7 @@ public class PythonNextgenClientCodegen extends AbstractPythonCodegen implements
 
             //loop through properties/schemas to set up typing, pydantic
             for (CodegenProperty cp : codegenProperties) {
-                String typing = getPydanticType(cp, typingImports, pydanticImports, datetimeImports, modelImports, model.classname);
+                String typing = getPydanticType(cp, typingImports, pydanticImports, datetimeImports, modelImports, exampleImports, model.classname);
                 List<String> fields = new ArrayList<>();
                 String firstField = "";
 

modules/openapi-generator/src/main/resources/python-nextgen/__init__package.mustache

@@ -18,6 +18,10 @@ from {{packageName}}.exceptions import ApiValueError
 from {{packageName}}.exceptions import ApiKeyError
 from {{packageName}}.exceptions import ApiAttributeError
 from {{packageName}}.exceptions import ApiException
+{{#hasHttpSignatureMethods}}
+from {{packageName}}.signing import HttpSigningConfiguration
+{{/hasHttpSignatureMethods}}
+
 # import models into sdk package
 {{#models}}
 {{#model}}

modules/openapi-generator/src/main/resources/python-nextgen/api_doc.mustache

@@ -35,12 +35,10 @@ Method | HTTP request | Description
 {{#isOAuth}}
 * OAuth Authentication ({{name}}):
 {{/isOAuth }}
-{{> api_doc_example }}
 {{/authMethods}}
 {{/hasAuthMethods}}
-{{^hasAuthMethods}}
 {{> api_doc_example }}
-{{/hasAuthMethods}}
+
 ### Parameters
 {{^allParams}}This endpoint does not need any parameter.{{/allParams}}{{#allParams}}{{#-last}}
 Name | Type | Description  | Notes

modules/openapi-generator/src/main/resources/python-nextgen/api_doc_example.mustache

@@ -1,10 +1,13 @@
 ```python
-from __future__ import print_function
 import time
 import os
 import {{{packageName}}}
+{{#vendorExtensions.x-py-example-import}}
+{{{.}}}
+{{/vendorExtensions.x-py-example-import}}
 from {{{packageName}}}.rest import ApiException
 from pprint import pprint
+
 {{> python_doc_auth_partial}}
 # Enter a context with an instance of the API client
 {{#asyncio}}async {{/asyncio}}with {{{packageName}}}.ApiClient(configuration) as api_client:

modules/openapi-generator/src/main/resources/python-nextgen/python_doc_auth_partial.mustache

@@ -64,9 +64,12 @@ configuration = {{{packageName}}}.Configuration(
 # the API server.
 #
 # See {{{packageName}}}.signing for a list of all supported parameters.
+from {{{packageName}}} import signing
+import datetime
+
 configuration = {{{packageName}}}.Configuration(
     host = "{{{basePath}}}",
-    signing_info = {{{packageName}}}.signing.HttpSigningConfiguration(
+    signing_info = {{{packageName}}}.HttpSigningConfiguration(
         key_id = 'my-key-id',
         private_key_path = 'private_key.pem',
         private_key_passphrase = 'YOUR_PASSPHRASE',

samples/client/echo_api/python-nextgen/docs/BodyApi.md

@@ -19,12 +19,12 @@ Test binary (gif) response body
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import openapi_client
 from openapi_client.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://localhost:3000
 # See configuration.py for a list of all supported configuration parameters.
 configuration = openapi_client.Configuration(
@@ -46,6 +46,7 @@ with openapi_client.ApiClient(configuration) as api_client:
         print("Exception when calling BodyApi->test_binary_gif: %s\n" % e)
 ```
 
+
 ### Parameters
 This endpoint does not need any parameter.
 
@@ -79,12 +80,13 @@ Test body parameter(s)
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import openapi_client
+from openapi_client.models.pet import Pet
 from openapi_client.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://localhost:3000
 # See configuration.py for a list of all supported configuration parameters.
 configuration = openapi_client.Configuration(
@@ -107,6 +109,7 @@ with openapi_client.ApiClient(configuration) as api_client:
         print("Exception when calling BodyApi->test_echo_body_pet: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes
@@ -143,12 +146,13 @@ Test empty response body
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import openapi_client
+from openapi_client.models.pet import Pet
 from openapi_client.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://localhost:3000
 # See configuration.py for a list of all supported configuration parameters.
 configuration = openapi_client.Configuration(
@@ -171,6 +175,7 @@ with openapi_client.ApiClient(configuration) as api_client:
         print("Exception when calling BodyApi->test_echo_body_pet_response_string: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes

samples/client/echo_api/python-nextgen/docs/FormApi.md

@@ -17,12 +17,12 @@ Test form parameter(s)
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import openapi_client
 from openapi_client.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://localhost:3000
 # See configuration.py for a list of all supported configuration parameters.
 configuration = openapi_client.Configuration(
@@ -47,6 +47,7 @@ with openapi_client.ApiClient(configuration) as api_client:
         print("Exception when calling FormApi->test_form_integer_boolean_string: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes

samples/client/echo_api/python-nextgen/docs/HeaderApi.md

@@ -17,12 +17,12 @@ Test header parameter(s)
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import openapi_client
 from openapi_client.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://localhost:3000
 # See configuration.py for a list of all supported configuration parameters.
 configuration = openapi_client.Configuration(
@@ -47,6 +47,7 @@ with openapi_client.ApiClient(configuration) as api_client:
         print("Exception when calling HeaderApi->test_header_integer_boolean_string: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes

samples/client/echo_api/python-nextgen/docs/PathApi.md

@@ -17,12 +17,12 @@ Test path parameter(s)
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import openapi_client
 from openapi_client.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://localhost:3000
 # See configuration.py for a list of all supported configuration parameters.
 configuration = openapi_client.Configuration(
@@ -46,6 +46,7 @@ with openapi_client.ApiClient(configuration) as api_client:
         print("Exception when calling PathApi->tests_path_string_path_string_integer_path_integer: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes

samples/client/echo_api/python-nextgen/docs/QueryApi.md

@@ -23,12 +23,12 @@ Test query parameter(s)
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import openapi_client
 from openapi_client.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://localhost:3000
 # See configuration.py for a list of all supported configuration parameters.
 configuration = openapi_client.Configuration(
@@ -53,6 +53,7 @@ with openapi_client.ApiClient(configuration) as api_client:
         print("Exception when calling QueryApi->test_query_datetime_date_string: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes
@@ -91,12 +92,12 @@ Test query parameter(s)
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import openapi_client
 from openapi_client.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://localhost:3000
 # See configuration.py for a list of all supported configuration parameters.
 configuration = openapi_client.Configuration(
@@ -121,6 +122,7 @@ with openapi_client.ApiClient(configuration) as api_client:
         print("Exception when calling QueryApi->test_query_integer_boolean_string: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes
@@ -159,12 +161,12 @@ Test query parameter(s)
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import openapi_client
 from openapi_client.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://localhost:3000
 # See configuration.py for a list of all supported configuration parameters.
 configuration = openapi_client.Configuration(
@@ -187,6 +189,7 @@ with openapi_client.ApiClient(configuration) as api_client:
         print("Exception when calling QueryApi->test_query_style_deep_object_explode_true_object: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes
@@ -223,12 +226,12 @@ Test query parameter(s)
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import openapi_client
 from openapi_client.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://localhost:3000
 # See configuration.py for a list of all supported configuration parameters.
 configuration = openapi_client.Configuration(
@@ -251,6 +254,7 @@ with openapi_client.ApiClient(configuration) as api_client:
         print("Exception when calling QueryApi->test_query_style_deep_object_explode_true_object_all_of: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes
@@ -287,12 +291,12 @@ Test query parameter(s)
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import openapi_client
 from openapi_client.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://localhost:3000
 # See configuration.py for a list of all supported configuration parameters.
 configuration = openapi_client.Configuration(
@@ -315,6 +319,7 @@ with openapi_client.ApiClient(configuration) as api_client:
         print("Exception when calling QueryApi->test_query_style_form_explode_true_array_string: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes
@@ -351,12 +356,12 @@ Test query parameter(s)
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import openapi_client
 from openapi_client.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://localhost:3000
 # See configuration.py for a list of all supported configuration parameters.
 configuration = openapi_client.Configuration(
@@ -379,6 +384,7 @@ with openapi_client.ApiClient(configuration) as api_client:
         print("Exception when calling QueryApi->test_query_style_form_explode_true_object: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes
@@ -415,12 +421,12 @@ Test query parameter(s)
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import openapi_client
 from openapi_client.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://localhost:3000
 # See configuration.py for a list of all supported configuration parameters.
 configuration = openapi_client.Configuration(
@@ -443,6 +449,7 @@ with openapi_client.ApiClient(configuration) as api_client:
         print("Exception when calling QueryApi->test_query_style_form_explode_true_object_all_of: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes

samples/client/echo_api/python-nextgen/openapi_client/__init__.py

@@ -33,6 +33,7 @@ from openapi_client.exceptions import ApiValueError
 from openapi_client.exceptions import ApiKeyError
 from openapi_client.exceptions import ApiAttributeError
 from openapi_client.exceptions import ApiException
+
 # import models into sdk package
 from openapi_client.models.bird import Bird
 from openapi_client.models.category import Category

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

@@ -31,6 +31,7 @@ class TestManual(unittest.TestCase):
 
     def testDateTimeQueryWithDateTimeFormat(self):
         api_instance = openapi_client.QueryApi()
+        datetime_format_backup = api_instance.api_client.configuration.datetime_format # backup dateime_format
         api_instance.api_client.configuration.datetime_format = "%Y-%m-%d %a %H:%M:%S%Z"
         datetime_query = datetime.datetime.fromisoformat('2013-10-20T19:20:30-05:00') # datetime |  (optional)
         date_query = '2013-10-20' # date |  (optional)
@@ -41,6 +42,9 @@ class TestManual(unittest.TestCase):
         e = EchoServerResponseParser(api_response)
         self.assertEqual(e.path, "/query/datetime/date/string?datetime_query=2013-10-20%20Sun%2019%3A20%3A30UTC-05%3A00&date_query=2013-10-20&string_query=string_query_example")
 
+        # restore datetime format
+        api_instance.api_client.configuration.datetime_format = datetime_format_backup
+
     def testDateTimeQueryWithDateTime(self):
         api_instance = openapi_client.QueryApi()
         datetime_query = datetime.datetime.fromisoformat('2013-10-20T19:20:30-05:00') # datetime |  (optional)

samples/openapi3/client/petstore/python-nextgen-aiohttp/docs/AnotherFakeApi.md

@@ -17,12 +17,13 @@ To test special tags and operation ID starting with number
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
+from petstore_api.models.client import Client
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -45,6 +46,7 @@ async with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling AnotherFakeApi->call_123_test_special_tags: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes

samples/openapi3/client/petstore/python-nextgen-aiohttp/docs/DefaultApi.md

@@ -15,12 +15,13 @@ Method | HTTP request | Description
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
+from petstore_api.models.foo_get_default_response import FooGetDefaultResponse
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -41,6 +42,7 @@ async with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling DefaultApi->foo_get: %s\n" % e)
 ```
 
+
 ### Parameters
 This endpoint does not need any parameter.
 

samples/openapi3/client/petstore/python-nextgen-aiohttp/docs/FakeApi.md

@@ -32,12 +32,12 @@ test any type request body
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -58,6 +58,7 @@ async with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling FakeApi->fake_any_type_request_body: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes
@@ -92,12 +93,13 @@ Health check endpoint
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
+from petstore_api.models.health_check_result import HealthCheckResult
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -119,6 +121,7 @@ async with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling FakeApi->fake_health_get: %s\n" % e)
 ```
 
+
 ### Parameters
 This endpoint does not need any parameter.
 
@@ -150,12 +153,13 @@ test http signature authentication
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
+from petstore_api.models.pet import Pet
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -203,9 +207,12 @@ configuration = petstore_api.Configuration(
 # the API server.
 #
 # See petstore_api.signing for a list of all supported parameters.
+from petstore_api import signing
+import datetime
+
 configuration = petstore_api.Configuration(
     host = "http://petstore.swagger.io:80/v2",
-    signing_info = petstore_api.signing.HttpSigningConfiguration(
+    signing_info = petstore_api.HttpSigningConfiguration(
         key_id = 'my-key-id',
         private_key_path = 'private_key.pem',
         private_key_passphrase = 'YOUR_PASSPHRASE',
@@ -242,6 +249,7 @@ async with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling FakeApi->fake_http_signature_test: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes
@@ -280,12 +288,12 @@ Test serialization of outer boolean types
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -307,6 +315,7 @@ async with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling FakeApi->fake_outer_boolean_serialize: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes
@@ -343,12 +352,13 @@ Test serialization of object with outer number type
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
+from petstore_api.models.outer_composite import OuterComposite
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -370,6 +380,7 @@ async with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling FakeApi->fake_outer_composite_serialize: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes
@@ -406,12 +417,12 @@ Test serialization of outer number types
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -433,6 +444,7 @@ async with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling FakeApi->fake_outer_number_serialize: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes
@@ -469,12 +481,12 @@ Test serialization of outer string types
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -496,6 +508,7 @@ async with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling FakeApi->fake_outer_string_serialize: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes
@@ -532,12 +545,13 @@ Test serialization of enum (int) properties with examples
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
+from petstore_api.models.outer_object_with_enum_property import OuterObjectWithEnumProperty
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -559,6 +573,7 @@ async with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling FakeApi->fake_property_enum_integer_serialize: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes
@@ -595,12 +610,12 @@ For this test, the body has to be a binary file.
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -620,6 +635,7 @@ async with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling FakeApi->test_body_with_binary: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes
@@ -656,12 +672,13 @@ For this test, the body for this request must reference a schema named `File`.
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
+from petstore_api.models.file_schema_test_class import FileSchemaTestClass
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -681,6 +698,7 @@ async with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling FakeApi->test_body_with_file_schema: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes
@@ -715,12 +733,13 @@ No authorization required
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
+from petstore_api.models.user import User
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -741,6 +760,7 @@ async with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling FakeApi->test_body_with_query_params: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes
@@ -778,12 +798,13 @@ To test \"client\" model
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
+from petstore_api.models.client import Client
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -806,6 +827,7 @@ async with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling FakeApi->test_client_model: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes
@@ -840,12 +862,12 @@ No authorization required
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -866,6 +888,7 @@ async with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling FakeApi->test_date_time_query_parameter: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes
@@ -904,12 +927,12 @@ Fake endpoint for testing various parameters 假端點 偽のエンドポイン
 
 * Basic Authentication (http_basic_test):
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -953,6 +976,7 @@ async with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling FakeApi->test_endpoint_parameters: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes
@@ -1004,12 +1028,12 @@ Fake endpoint to test group parameters (optional)
 
 * Bearer (JWT) Authentication (bearer_test):
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -1044,6 +1068,7 @@ async with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling FakeApi->test_group_parameters: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes
@@ -1085,12 +1110,12 @@ test inline additionalProperties
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -1111,6 +1136,7 @@ async with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling FakeApi->test_inline_additional_properties: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes
@@ -1147,12 +1173,12 @@ test json serialization of form data
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -1174,6 +1200,7 @@ async with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling FakeApi->test_json_form_data: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes
@@ -1211,12 +1238,12 @@ To test the collection format in query parameters
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -1242,6 +1269,7 @@ async with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling FakeApi->test_query_parameter_collection_format: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes

samples/openapi3/client/petstore/python-nextgen-aiohttp/docs/FakeClassnameTags123Api.md

@@ -18,12 +18,13 @@ To test class name in snake case
 
 * Api Key Authentication (api_key_query):
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
+from petstore_api.models.client import Client
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -56,6 +57,7 @@ async with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling FakeClassnameTags123Api->test_classname: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes

samples/openapi3/client/petstore/python-nextgen-aiohttp/docs/PetApi.md

@@ -26,12 +26,13 @@ Add a new pet to the store
 
 * OAuth Authentication (petstore_auth):
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
+from petstore_api.models.pet import Pet
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -81,9 +82,12 @@ configuration.access_token = os.environ["ACCESS_TOKEN"]
 # the API server.
 #
 # See petstore_api.signing for a list of all supported parameters.
+from petstore_api import signing
+import datetime
+
 configuration = petstore_api.Configuration(
     host = "http://petstore.swagger.io:80/v2",
-    signing_info = petstore_api.signing.HttpSigningConfiguration(
+    signing_info = petstore_api.HttpSigningConfiguration(
         key_id = 'my-key-id',
         private_key_path = 'private_key.pem',
         private_key_passphrase = 'YOUR_PASSPHRASE',
@@ -118,98 +122,6 @@ async with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling PetApi->add_pet: %s\n" % e)
 ```
 
-```python
-from __future__ import print_function
-import time
-import os
-import petstore_api
-from petstore_api.rest import ApiException
-from pprint import pprint
-# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
-# See configuration.py for a list of all supported configuration parameters.
-configuration = petstore_api.Configuration(
-    host = "http://petstore.swagger.io:80/v2"
-)
-
-# The client must configure the authentication and authorization parameters
-# in accordance with the API server security policy.
-# Examples for each auth method are provided below, use the example that
-# satisfies your auth use case.
-
-configuration.access_token = os.environ["ACCESS_TOKEN"]
-
-# Configure HTTP message signature: http_signature_test
-# The HTTP Signature Header mechanism that can be used by a client to
-# authenticate the sender of a message and ensure that particular headers
-# have not been modified in transit.
-#
-# You can specify the signing key-id, private key path, signing scheme,
-# signing algorithm, list of signed headers and signature max validity.
-# The 'key_id' parameter is an opaque string that the API server can use
-# to lookup the client and validate the signature.
-# The 'private_key_path' parameter should be the path to a file that
-# contains a DER or base-64 encoded private key.
-# The 'private_key_passphrase' parameter is optional. Set the passphrase
-# if the private key is encrypted.
-# The 'signed_headers' parameter is used to specify the list of
-# HTTP headers included when generating the signature for the message.
-# You can specify HTTP headers that you want to protect with a cryptographic
-# signature. Note that proxies may add, modify or remove HTTP headers
-# for legitimate reasons, so you should only add headers that you know
-# will not be modified. For example, if you want to protect the HTTP request
-# body, you can specify the Digest header. In that case, the client calculates
-# the digest of the HTTP request body and includes the digest in the message
-# signature.
-# The 'signature_max_validity' parameter is optional. It is configured as a
-# duration to express when the signature ceases to be valid. The client calculates
-# the expiration date every time it generates the cryptographic signature
-# of an HTTP request. The API server may have its own security policy
-# that controls the maximum validity of the signature. The client max validity
-# must be lower than the server max validity.
-# The time on the client and server must be synchronized, otherwise the
-# server may reject the client signature.
-#
-# The client must use a combination of private key, signing scheme,
-# signing algorithm and hash algorithm that matches the security policy of
-# the API server.
-#
-# See petstore_api.signing for a list of all supported parameters.
-configuration = petstore_api.Configuration(
-    host = "http://petstore.swagger.io:80/v2",
-    signing_info = petstore_api.signing.HttpSigningConfiguration(
-        key_id = 'my-key-id',
-        private_key_path = 'private_key.pem',
-        private_key_passphrase = 'YOUR_PASSPHRASE',
-        signing_scheme = petstore_api.signing.SCHEME_HS2019,
-        signing_algorithm = petstore_api.signing.ALGORITHM_ECDSA_MODE_FIPS_186_3,
-        hash_algorithm = petstore_api.signing.SCHEME_RSA_SHA256,
-        signed_headers = [
-                            petstore_api.signing.HEADER_REQUEST_TARGET,
-                            petstore_api.signing.HEADER_CREATED,
-                            petstore_api.signing.HEADER_EXPIRES,
-                            petstore_api.signing.HEADER_HOST,
-                            petstore_api.signing.HEADER_DATE,
-                            petstore_api.signing.HEADER_DIGEST,
-                            'Content-Type',
-                            'Content-Length',
-                            'User-Agent'
-                         ],
-        signature_max_validity = datetime.timedelta(minutes=5)
-    )
-)
-
-# Enter a context with an instance of the API client
-async with petstore_api.ApiClient(configuration) as api_client:
-    # Create an instance of the API class
-    api_instance = petstore_api.PetApi(api_client)
-    pet = petstore_api.Pet() # Pet | Pet object that needs to be added to the store
-
-    try:
-        # Add a new pet to the store
-        await api_instance.add_pet(pet)
-    except Exception as e:
-        print("Exception when calling PetApi->add_pet: %s\n" % e)
-```
 
 ### Parameters
 
@@ -249,12 +161,12 @@ Deletes a pet
 
 * OAuth Authentication (petstore_auth):
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -282,6 +194,7 @@ async with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling PetApi->delete_pet: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes
@@ -321,12 +234,13 @@ Multiple status values can be provided with comma separated strings
 
 * OAuth Authentication (petstore_auth):
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
+from petstore_api.models.pet import Pet
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -376,9 +290,12 @@ configuration.access_token = os.environ["ACCESS_TOKEN"]
 # the API server.
 #
 # See petstore_api.signing for a list of all supported parameters.
+from petstore_api import signing
+import datetime
+
 configuration = petstore_api.Configuration(
     host = "http://petstore.swagger.io:80/v2",
-    signing_info = petstore_api.signing.HttpSigningConfiguration(
+    signing_info = petstore_api.HttpSigningConfiguration(
         key_id = 'my-key-id',
         private_key_path = 'private_key.pem',
         private_key_passphrase = 'YOUR_PASSPHRASE',
@@ -415,100 +332,6 @@ async with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling PetApi->find_pets_by_status: %s\n" % e)
 ```
 
-```python
-from __future__ import print_function
-import time
-import os
-import petstore_api
-from petstore_api.rest import ApiException
-from pprint import pprint
-# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
-# See configuration.py for a list of all supported configuration parameters.
-configuration = petstore_api.Configuration(
-    host = "http://petstore.swagger.io:80/v2"
-)
-
-# The client must configure the authentication and authorization parameters
-# in accordance with the API server security policy.
-# Examples for each auth method are provided below, use the example that
-# satisfies your auth use case.
-
-configuration.access_token = os.environ["ACCESS_TOKEN"]
-
-# Configure HTTP message signature: http_signature_test
-# The HTTP Signature Header mechanism that can be used by a client to
-# authenticate the sender of a message and ensure that particular headers
-# have not been modified in transit.
-#
-# You can specify the signing key-id, private key path, signing scheme,
-# signing algorithm, list of signed headers and signature max validity.
-# The 'key_id' parameter is an opaque string that the API server can use
-# to lookup the client and validate the signature.
-# The 'private_key_path' parameter should be the path to a file that
-# contains a DER or base-64 encoded private key.
-# The 'private_key_passphrase' parameter is optional. Set the passphrase
-# if the private key is encrypted.
-# The 'signed_headers' parameter is used to specify the list of
-# HTTP headers included when generating the signature for the message.
-# You can specify HTTP headers that you want to protect with a cryptographic
-# signature. Note that proxies may add, modify or remove HTTP headers
-# for legitimate reasons, so you should only add headers that you know
-# will not be modified. For example, if you want to protect the HTTP request
-# body, you can specify the Digest header. In that case, the client calculates
-# the digest of the HTTP request body and includes the digest in the message
-# signature.
-# The 'signature_max_validity' parameter is optional. It is configured as a
-# duration to express when the signature ceases to be valid. The client calculates
-# the expiration date every time it generates the cryptographic signature
-# of an HTTP request. The API server may have its own security policy
-# that controls the maximum validity of the signature. The client max validity
-# must be lower than the server max validity.
-# The time on the client and server must be synchronized, otherwise the
-# server may reject the client signature.
-#
-# The client must use a combination of private key, signing scheme,
-# signing algorithm and hash algorithm that matches the security policy of
-# the API server.
-#
-# See petstore_api.signing for a list of all supported parameters.
-configuration = petstore_api.Configuration(
-    host = "http://petstore.swagger.io:80/v2",
-    signing_info = petstore_api.signing.HttpSigningConfiguration(
-        key_id = 'my-key-id',
-        private_key_path = 'private_key.pem',
-        private_key_passphrase = 'YOUR_PASSPHRASE',
-        signing_scheme = petstore_api.signing.SCHEME_HS2019,
-        signing_algorithm = petstore_api.signing.ALGORITHM_ECDSA_MODE_FIPS_186_3,
-        hash_algorithm = petstore_api.signing.SCHEME_RSA_SHA256,
-        signed_headers = [
-                            petstore_api.signing.HEADER_REQUEST_TARGET,
-                            petstore_api.signing.HEADER_CREATED,
-                            petstore_api.signing.HEADER_EXPIRES,
-                            petstore_api.signing.HEADER_HOST,
-                            petstore_api.signing.HEADER_DATE,
-                            petstore_api.signing.HEADER_DIGEST,
-                            'Content-Type',
-                            'Content-Length',
-                            'User-Agent'
-                         ],
-        signature_max_validity = datetime.timedelta(minutes=5)
-    )
-)
-
-# Enter a context with an instance of the API client
-async with petstore_api.ApiClient(configuration) as api_client:
-    # Create an instance of the API class
-    api_instance = petstore_api.PetApi(api_client)
-    status = ['status_example'] # List[str] | Status values that need to be considered for filter
-
-    try:
-        # Finds Pets by status
-        api_response = await api_instance.find_pets_by_status(status)
-        print("The response of PetApi->find_pets_by_status:\n")
-        pprint(api_response)
-    except Exception as e:
-        print("Exception when calling PetApi->find_pets_by_status: %s\n" % e)
-```
 
 ### Parameters
 
@@ -548,12 +371,13 @@ Multiple tags can be provided with comma separated strings. Use tag1, tag2, tag3
 
 * OAuth Authentication (petstore_auth):
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
+from petstore_api.models.pet import Pet
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -603,9 +427,12 @@ configuration.access_token = os.environ["ACCESS_TOKEN"]
 # the API server.
 #
 # See petstore_api.signing for a list of all supported parameters.
+from petstore_api import signing
+import datetime
+
 configuration = petstore_api.Configuration(
     host = "http://petstore.swagger.io:80/v2",
-    signing_info = petstore_api.signing.HttpSigningConfiguration(
+    signing_info = petstore_api.HttpSigningConfiguration(
         key_id = 'my-key-id',
         private_key_path = 'private_key.pem',
         private_key_passphrase = 'YOUR_PASSPHRASE',
@@ -642,100 +469,6 @@ async with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling PetApi->find_pets_by_tags: %s\n" % e)
 ```
 
-```python
-from __future__ import print_function
-import time
-import os
-import petstore_api
-from petstore_api.rest import ApiException
-from pprint import pprint
-# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
-# See configuration.py for a list of all supported configuration parameters.
-configuration = petstore_api.Configuration(
-    host = "http://petstore.swagger.io:80/v2"
-)
-
-# The client must configure the authentication and authorization parameters
-# in accordance with the API server security policy.
-# Examples for each auth method are provided below, use the example that
-# satisfies your auth use case.
-
-configuration.access_token = os.environ["ACCESS_TOKEN"]
-
-# Configure HTTP message signature: http_signature_test
-# The HTTP Signature Header mechanism that can be used by a client to
-# authenticate the sender of a message and ensure that particular headers
-# have not been modified in transit.
-#
-# You can specify the signing key-id, private key path, signing scheme,
-# signing algorithm, list of signed headers and signature max validity.
-# The 'key_id' parameter is an opaque string that the API server can use
-# to lookup the client and validate the signature.
-# The 'private_key_path' parameter should be the path to a file that
-# contains a DER or base-64 encoded private key.
-# The 'private_key_passphrase' parameter is optional. Set the passphrase
-# if the private key is encrypted.
-# The 'signed_headers' parameter is used to specify the list of
-# HTTP headers included when generating the signature for the message.
-# You can specify HTTP headers that you want to protect with a cryptographic
-# signature. Note that proxies may add, modify or remove HTTP headers
-# for legitimate reasons, so you should only add headers that you know
-# will not be modified. For example, if you want to protect the HTTP request
-# body, you can specify the Digest header. In that case, the client calculates
-# the digest of the HTTP request body and includes the digest in the message
-# signature.
-# The 'signature_max_validity' parameter is optional. It is configured as a
-# duration to express when the signature ceases to be valid. The client calculates
-# the expiration date every time it generates the cryptographic signature
-# of an HTTP request. The API server may have its own security policy
-# that controls the maximum validity of the signature. The client max validity
-# must be lower than the server max validity.
-# The time on the client and server must be synchronized, otherwise the
-# server may reject the client signature.
-#
-# The client must use a combination of private key, signing scheme,
-# signing algorithm and hash algorithm that matches the security policy of
-# the API server.
-#
-# See petstore_api.signing for a list of all supported parameters.
-configuration = petstore_api.Configuration(
-    host = "http://petstore.swagger.io:80/v2",
-    signing_info = petstore_api.signing.HttpSigningConfiguration(
-        key_id = 'my-key-id',
-        private_key_path = 'private_key.pem',
-        private_key_passphrase = 'YOUR_PASSPHRASE',
-        signing_scheme = petstore_api.signing.SCHEME_HS2019,
-        signing_algorithm = petstore_api.signing.ALGORITHM_ECDSA_MODE_FIPS_186_3,
-        hash_algorithm = petstore_api.signing.SCHEME_RSA_SHA256,
-        signed_headers = [
-                            petstore_api.signing.HEADER_REQUEST_TARGET,
-                            petstore_api.signing.HEADER_CREATED,
-                            petstore_api.signing.HEADER_EXPIRES,
-                            petstore_api.signing.HEADER_HOST,
-                            petstore_api.signing.HEADER_DATE,
-                            petstore_api.signing.HEADER_DIGEST,
-                            'Content-Type',
-                            'Content-Length',
-                            'User-Agent'
-                         ],
-        signature_max_validity = datetime.timedelta(minutes=5)
-    )
-)
-
-# Enter a context with an instance of the API client
-async with petstore_api.ApiClient(configuration) as api_client:
-    # Create an instance of the API class
-    api_instance = petstore_api.PetApi(api_client)
-    tags = ['tags_example'] # List[str] | Tags to filter by
-
-    try:
-        # Finds Pets by tags
-        api_response = await api_instance.find_pets_by_tags(tags)
-        print("The response of PetApi->find_pets_by_tags:\n")
-        pprint(api_response)
-    except Exception as e:
-        print("Exception when calling PetApi->find_pets_by_tags: %s\n" % e)
-```
 
 ### Parameters
 
@@ -775,12 +508,13 @@ Returns a single pet
 
 * Api Key Authentication (api_key):
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
+from petstore_api.models.pet import Pet
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -813,6 +547,7 @@ async with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling PetApi->get_pet_by_id: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes
@@ -852,12 +587,13 @@ Update an existing pet
 
 * OAuth Authentication (petstore_auth):
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
+from petstore_api.models.pet import Pet
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -907,9 +643,12 @@ configuration.access_token = os.environ["ACCESS_TOKEN"]
 # the API server.
 #
 # See petstore_api.signing for a list of all supported parameters.
+from petstore_api import signing
+import datetime
+
 configuration = petstore_api.Configuration(
     host = "http://petstore.swagger.io:80/v2",
-    signing_info = petstore_api.signing.HttpSigningConfiguration(
+    signing_info = petstore_api.HttpSigningConfiguration(
         key_id = 'my-key-id',
         private_key_path = 'private_key.pem',
         private_key_passphrase = 'YOUR_PASSPHRASE',
@@ -944,98 +683,6 @@ async with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling PetApi->update_pet: %s\n" % e)
 ```
 
-```python
-from __future__ import print_function
-import time
-import os
-import petstore_api
-from petstore_api.rest import ApiException
-from pprint import pprint
-# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
-# See configuration.py for a list of all supported configuration parameters.
-configuration = petstore_api.Configuration(
-    host = "http://petstore.swagger.io:80/v2"
-)
-
-# The client must configure the authentication and authorization parameters
-# in accordance with the API server security policy.
-# Examples for each auth method are provided below, use the example that
-# satisfies your auth use case.
-
-configuration.access_token = os.environ["ACCESS_TOKEN"]
-
-# Configure HTTP message signature: http_signature_test
-# The HTTP Signature Header mechanism that can be used by a client to
-# authenticate the sender of a message and ensure that particular headers
-# have not been modified in transit.
-#
-# You can specify the signing key-id, private key path, signing scheme,
-# signing algorithm, list of signed headers and signature max validity.
-# The 'key_id' parameter is an opaque string that the API server can use
-# to lookup the client and validate the signature.
-# The 'private_key_path' parameter should be the path to a file that
-# contains a DER or base-64 encoded private key.
-# The 'private_key_passphrase' parameter is optional. Set the passphrase
-# if the private key is encrypted.
-# The 'signed_headers' parameter is used to specify the list of
-# HTTP headers included when generating the signature for the message.
-# You can specify HTTP headers that you want to protect with a cryptographic
-# signature. Note that proxies may add, modify or remove HTTP headers
-# for legitimate reasons, so you should only add headers that you know
-# will not be modified. For example, if you want to protect the HTTP request
-# body, you can specify the Digest header. In that case, the client calculates
-# the digest of the HTTP request body and includes the digest in the message
-# signature.
-# The 'signature_max_validity' parameter is optional. It is configured as a
-# duration to express when the signature ceases to be valid. The client calculates
-# the expiration date every time it generates the cryptographic signature
-# of an HTTP request. The API server may have its own security policy
-# that controls the maximum validity of the signature. The client max validity
-# must be lower than the server max validity.
-# The time on the client and server must be synchronized, otherwise the
-# server may reject the client signature.
-#
-# The client must use a combination of private key, signing scheme,
-# signing algorithm and hash algorithm that matches the security policy of
-# the API server.
-#
-# See petstore_api.signing for a list of all supported parameters.
-configuration = petstore_api.Configuration(
-    host = "http://petstore.swagger.io:80/v2",
-    signing_info = petstore_api.signing.HttpSigningConfiguration(
-        key_id = 'my-key-id',
-        private_key_path = 'private_key.pem',
-        private_key_passphrase = 'YOUR_PASSPHRASE',
-        signing_scheme = petstore_api.signing.SCHEME_HS2019,
-        signing_algorithm = petstore_api.signing.ALGORITHM_ECDSA_MODE_FIPS_186_3,
-        hash_algorithm = petstore_api.signing.SCHEME_RSA_SHA256,
-        signed_headers = [
-                            petstore_api.signing.HEADER_REQUEST_TARGET,
-                            petstore_api.signing.HEADER_CREATED,
-                            petstore_api.signing.HEADER_EXPIRES,
-                            petstore_api.signing.HEADER_HOST,
-                            petstore_api.signing.HEADER_DATE,
-                            petstore_api.signing.HEADER_DIGEST,
-                            'Content-Type',
-                            'Content-Length',
-                            'User-Agent'
-                         ],
-        signature_max_validity = datetime.timedelta(minutes=5)
-    )
-)
-
-# Enter a context with an instance of the API client
-async with petstore_api.ApiClient(configuration) as api_client:
-    # Create an instance of the API class
-    api_instance = petstore_api.PetApi(api_client)
-    pet = petstore_api.Pet() # Pet | Pet object that needs to be added to the store
-
-    try:
-        # Update an existing pet
-        await api_instance.update_pet(pet)
-    except Exception as e:
-        print("Exception when calling PetApi->update_pet: %s\n" % e)
-```
 
 ### Parameters
 
@@ -1077,12 +724,12 @@ Updates a pet in the store with form data
 
 * OAuth Authentication (petstore_auth):
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -1111,6 +758,7 @@ async with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling PetApi->update_pet_with_form: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes
@@ -1151,12 +799,13 @@ uploads an image
 
 * OAuth Authentication (petstore_auth):
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
+from petstore_api.models.api_response import ApiResponse
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -1187,6 +836,7 @@ async with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling PetApi->upload_file: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes
@@ -1226,12 +876,13 @@ uploads an image (required)
 
 * OAuth Authentication (petstore_auth):
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
+from petstore_api.models.api_response import ApiResponse
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -1262,6 +913,7 @@ async with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling PetApi->upload_file_with_required_file: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes

samples/openapi3/client/petstore/python-nextgen-aiohttp/docs/StoreApi.md

@@ -20,12 +20,12 @@ For valid response try integer IDs with value < 1000. Anything above 1000 or non
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -46,6 +46,7 @@ async with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling StoreApi->delete_order: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes
@@ -84,12 +85,12 @@ Returns a map of status codes to quantities
 
 * Api Key Authentication (api_key):
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -121,6 +122,7 @@ async with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling StoreApi->get_inventory: %s\n" % e)
 ```
 
+
 ### Parameters
 This endpoint does not need any parameter.
 
@@ -154,12 +156,13 @@ For valid response try integer IDs with value <= 5 or > 10. Other values will ge
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
+from petstore_api.models.order import Order
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -182,6 +185,7 @@ async with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling StoreApi->get_order_by_id: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes
@@ -220,12 +224,13 @@ Place an order for a pet
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
+from petstore_api.models.order import Order
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -248,6 +253,7 @@ async with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling StoreApi->place_order: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes

samples/openapi3/client/petstore/python-nextgen-aiohttp/docs/UserApi.md

@@ -24,12 +24,13 @@ This can only be done by the logged in user.
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
+from petstore_api.models.user import User
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -50,6 +51,7 @@ async with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling UserApi->create_user: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes
@@ -86,12 +88,13 @@ Creates list of users with given input array
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
+from petstore_api.models.user import User
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -112,6 +115,7 @@ async with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling UserApi->create_users_with_array_input: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes
@@ -148,12 +152,13 @@ Creates list of users with given input array
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
+from petstore_api.models.user import User
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -174,6 +179,7 @@ async with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling UserApi->create_users_with_list_input: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes
@@ -210,12 +216,12 @@ This can only be done by the logged in user.
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -236,6 +242,7 @@ async with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling UserApi->delete_user: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes
@@ -273,12 +280,13 @@ Get user by user name
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
+from petstore_api.models.user import User
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -301,6 +309,7 @@ async with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling UserApi->get_user_by_name: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes
@@ -339,12 +348,12 @@ Logs user into the system
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -368,6 +377,7 @@ async with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling UserApi->login_user: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes
@@ -406,12 +416,12 @@ Logs out current logged in user session
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -431,6 +441,7 @@ async with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling UserApi->logout_user: %s\n" % e)
 ```
 
+
 ### Parameters
 This endpoint does not need any parameter.
 
@@ -464,12 +475,13 @@ This can only be done by the logged in user.
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
+from petstore_api.models.user import User
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -491,6 +503,7 @@ async with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling UserApi->update_user: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes

samples/openapi3/client/petstore/python-nextgen-aiohttp/petstore_api/__init__.py

@@ -34,6 +34,8 @@ from petstore_api.exceptions import ApiValueError
 from petstore_api.exceptions import ApiKeyError
 from petstore_api.exceptions import ApiAttributeError
 from petstore_api.exceptions import ApiException
+from petstore_api.signing import HttpSigningConfiguration
+
 # import models into sdk package
 from petstore_api.models.additional_properties_class import AdditionalPropertiesClass
 from petstore_api.models.all_of_with_single_ref import AllOfWithSingleRef

samples/openapi3/client/petstore/python-nextgen/docs/AnotherFakeApi.md

@@ -17,12 +17,13 @@ To test special tags and operation ID starting with number
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
+from petstore_api.models.client import Client
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -45,6 +46,7 @@ with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling AnotherFakeApi->call_123_test_special_tags: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes

samples/openapi3/client/petstore/python-nextgen/docs/DefaultApi.md

@@ -15,12 +15,13 @@ Method | HTTP request | Description
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
+from petstore_api.models.foo_get_default_response import FooGetDefaultResponse
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -41,6 +42,7 @@ with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling DefaultApi->foo_get: %s\n" % e)
 ```
 
+
 ### Parameters
 This endpoint does not need any parameter.
 

samples/openapi3/client/petstore/python-nextgen/docs/FakeApi.md

@@ -32,12 +32,12 @@ test any type request body
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -58,6 +58,7 @@ with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling FakeApi->fake_any_type_request_body: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes
@@ -92,12 +93,13 @@ Health check endpoint
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
+from petstore_api.models.health_check_result import HealthCheckResult
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -119,6 +121,7 @@ with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling FakeApi->fake_health_get: %s\n" % e)
 ```
 
+
 ### Parameters
 This endpoint does not need any parameter.
 
@@ -150,12 +153,13 @@ test http signature authentication
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
+from petstore_api.models.pet import Pet
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -203,9 +207,12 @@ configuration = petstore_api.Configuration(
 # the API server.
 #
 # See petstore_api.signing for a list of all supported parameters.
+from petstore_api import signing
+import datetime
+
 configuration = petstore_api.Configuration(
     host = "http://petstore.swagger.io:80/v2",
-    signing_info = petstore_api.signing.HttpSigningConfiguration(
+    signing_info = petstore_api.HttpSigningConfiguration(
         key_id = 'my-key-id',
         private_key_path = 'private_key.pem',
         private_key_passphrase = 'YOUR_PASSPHRASE',
@@ -242,6 +249,7 @@ with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling FakeApi->fake_http_signature_test: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes
@@ -280,12 +288,12 @@ Test serialization of outer boolean types
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -307,6 +315,7 @@ with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling FakeApi->fake_outer_boolean_serialize: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes
@@ -343,12 +352,13 @@ Test serialization of object with outer number type
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
+from petstore_api.models.outer_composite import OuterComposite
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -370,6 +380,7 @@ with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling FakeApi->fake_outer_composite_serialize: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes
@@ -406,12 +417,12 @@ Test serialization of outer number types
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -433,6 +444,7 @@ with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling FakeApi->fake_outer_number_serialize: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes
@@ -469,12 +481,12 @@ Test serialization of outer string types
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -496,6 +508,7 @@ with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling FakeApi->fake_outer_string_serialize: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes
@@ -532,12 +545,13 @@ Test serialization of enum (int) properties with examples
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
+from petstore_api.models.outer_object_with_enum_property import OuterObjectWithEnumProperty
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -559,6 +573,7 @@ with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling FakeApi->fake_property_enum_integer_serialize: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes
@@ -595,12 +610,12 @@ For this test, the body has to be a binary file.
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -620,6 +635,7 @@ with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling FakeApi->test_body_with_binary: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes
@@ -656,12 +672,13 @@ For this test, the body for this request must reference a schema named `File`.
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
+from petstore_api.models.file_schema_test_class import FileSchemaTestClass
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -681,6 +698,7 @@ with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling FakeApi->test_body_with_file_schema: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes
@@ -715,12 +733,13 @@ No authorization required
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
+from petstore_api.models.user import User
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -741,6 +760,7 @@ with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling FakeApi->test_body_with_query_params: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes
@@ -778,12 +798,13 @@ To test \"client\" model
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
+from petstore_api.models.client import Client
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -806,6 +827,7 @@ with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling FakeApi->test_client_model: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes
@@ -840,12 +862,12 @@ No authorization required
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -866,6 +888,7 @@ with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling FakeApi->test_date_time_query_parameter: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes
@@ -904,12 +927,12 @@ Fake endpoint for testing various parameters 假端點 偽のエンドポイン
 
 * Basic Authentication (http_basic_test):
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -953,6 +976,7 @@ with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling FakeApi->test_endpoint_parameters: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes
@@ -1004,12 +1028,12 @@ Fake endpoint to test group parameters (optional)
 
 * Bearer (JWT) Authentication (bearer_test):
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -1044,6 +1068,7 @@ with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling FakeApi->test_group_parameters: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes
@@ -1085,12 +1110,12 @@ test inline additionalProperties
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -1111,6 +1136,7 @@ with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling FakeApi->test_inline_additional_properties: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes
@@ -1147,12 +1173,12 @@ test json serialization of form data
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -1174,6 +1200,7 @@ with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling FakeApi->test_json_form_data: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes
@@ -1211,12 +1238,12 @@ To test the collection format in query parameters
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -1242,6 +1269,7 @@ with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling FakeApi->test_query_parameter_collection_format: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes

samples/openapi3/client/petstore/python-nextgen/docs/FakeClassnameTags123Api.md

@@ -18,12 +18,13 @@ To test class name in snake case
 
 * Api Key Authentication (api_key_query):
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
+from petstore_api.models.client import Client
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -56,6 +57,7 @@ with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling FakeClassnameTags123Api->test_classname: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes

samples/openapi3/client/petstore/python-nextgen/docs/PetApi.md

@@ -26,12 +26,13 @@ Add a new pet to the store
 
 * OAuth Authentication (petstore_auth):
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
+from petstore_api.models.pet import Pet
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -81,9 +82,12 @@ configuration.access_token = os.environ["ACCESS_TOKEN"]
 # the API server.
 #
 # See petstore_api.signing for a list of all supported parameters.
+from petstore_api import signing
+import datetime
+
 configuration = petstore_api.Configuration(
     host = "http://petstore.swagger.io:80/v2",
-    signing_info = petstore_api.signing.HttpSigningConfiguration(
+    signing_info = petstore_api.HttpSigningConfiguration(
         key_id = 'my-key-id',
         private_key_path = 'private_key.pem',
         private_key_passphrase = 'YOUR_PASSPHRASE',
@@ -118,98 +122,6 @@ with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling PetApi->add_pet: %s\n" % e)
 ```
 
-```python
-from __future__ import print_function
-import time
-import os
-import petstore_api
-from petstore_api.rest import ApiException
-from pprint import pprint
-# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
-# See configuration.py for a list of all supported configuration parameters.
-configuration = petstore_api.Configuration(
-    host = "http://petstore.swagger.io:80/v2"
-)
-
-# The client must configure the authentication and authorization parameters
-# in accordance with the API server security policy.
-# Examples for each auth method are provided below, use the example that
-# satisfies your auth use case.
-
-configuration.access_token = os.environ["ACCESS_TOKEN"]
-
-# Configure HTTP message signature: http_signature_test
-# The HTTP Signature Header mechanism that can be used by a client to
-# authenticate the sender of a message and ensure that particular headers
-# have not been modified in transit.
-#
-# You can specify the signing key-id, private key path, signing scheme,
-# signing algorithm, list of signed headers and signature max validity.
-# The 'key_id' parameter is an opaque string that the API server can use
-# to lookup the client and validate the signature.
-# The 'private_key_path' parameter should be the path to a file that
-# contains a DER or base-64 encoded private key.
-# The 'private_key_passphrase' parameter is optional. Set the passphrase
-# if the private key is encrypted.
-# The 'signed_headers' parameter is used to specify the list of
-# HTTP headers included when generating the signature for the message.
-# You can specify HTTP headers that you want to protect with a cryptographic
-# signature. Note that proxies may add, modify or remove HTTP headers
-# for legitimate reasons, so you should only add headers that you know
-# will not be modified. For example, if you want to protect the HTTP request
-# body, you can specify the Digest header. In that case, the client calculates
-# the digest of the HTTP request body and includes the digest in the message
-# signature.
-# The 'signature_max_validity' parameter is optional. It is configured as a
-# duration to express when the signature ceases to be valid. The client calculates
-# the expiration date every time it generates the cryptographic signature
-# of an HTTP request. The API server may have its own security policy
-# that controls the maximum validity of the signature. The client max validity
-# must be lower than the server max validity.
-# The time on the client and server must be synchronized, otherwise the
-# server may reject the client signature.
-#
-# The client must use a combination of private key, signing scheme,
-# signing algorithm and hash algorithm that matches the security policy of
-# the API server.
-#
-# See petstore_api.signing for a list of all supported parameters.
-configuration = petstore_api.Configuration(
-    host = "http://petstore.swagger.io:80/v2",
-    signing_info = petstore_api.signing.HttpSigningConfiguration(
-        key_id = 'my-key-id',
-        private_key_path = 'private_key.pem',
-        private_key_passphrase = 'YOUR_PASSPHRASE',
-        signing_scheme = petstore_api.signing.SCHEME_HS2019,
-        signing_algorithm = petstore_api.signing.ALGORITHM_ECDSA_MODE_FIPS_186_3,
-        hash_algorithm = petstore_api.signing.SCHEME_RSA_SHA256,
-        signed_headers = [
-                            petstore_api.signing.HEADER_REQUEST_TARGET,
-                            petstore_api.signing.HEADER_CREATED,
-                            petstore_api.signing.HEADER_EXPIRES,
-                            petstore_api.signing.HEADER_HOST,
-                            petstore_api.signing.HEADER_DATE,
-                            petstore_api.signing.HEADER_DIGEST,
-                            'Content-Type',
-                            'Content-Length',
-                            'User-Agent'
-                         ],
-        signature_max_validity = datetime.timedelta(minutes=5)
-    )
-)
-
-# Enter a context with an instance of the API client
-with petstore_api.ApiClient(configuration) as api_client:
-    # Create an instance of the API class
-    api_instance = petstore_api.PetApi(api_client)
-    pet = petstore_api.Pet() # Pet | Pet object that needs to be added to the store
-
-    try:
-        # Add a new pet to the store
-        api_instance.add_pet(pet)
-    except Exception as e:
-        print("Exception when calling PetApi->add_pet: %s\n" % e)
-```
 
 ### Parameters
 
@@ -249,12 +161,12 @@ Deletes a pet
 
 * OAuth Authentication (petstore_auth):
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -282,6 +194,7 @@ with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling PetApi->delete_pet: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes
@@ -321,12 +234,13 @@ Multiple status values can be provided with comma separated strings
 
 * OAuth Authentication (petstore_auth):
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
+from petstore_api.models.pet import Pet
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -376,9 +290,12 @@ configuration.access_token = os.environ["ACCESS_TOKEN"]
 # the API server.
 #
 # See petstore_api.signing for a list of all supported parameters.
+from petstore_api import signing
+import datetime
+
 configuration = petstore_api.Configuration(
     host = "http://petstore.swagger.io:80/v2",
-    signing_info = petstore_api.signing.HttpSigningConfiguration(
+    signing_info = petstore_api.HttpSigningConfiguration(
         key_id = 'my-key-id',
         private_key_path = 'private_key.pem',
         private_key_passphrase = 'YOUR_PASSPHRASE',
@@ -415,100 +332,6 @@ with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling PetApi->find_pets_by_status: %s\n" % e)
 ```
 
-```python
-from __future__ import print_function
-import time
-import os
-import petstore_api
-from petstore_api.rest import ApiException
-from pprint import pprint
-# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
-# See configuration.py for a list of all supported configuration parameters.
-configuration = petstore_api.Configuration(
-    host = "http://petstore.swagger.io:80/v2"
-)
-
-# The client must configure the authentication and authorization parameters
-# in accordance with the API server security policy.
-# Examples for each auth method are provided below, use the example that
-# satisfies your auth use case.
-
-configuration.access_token = os.environ["ACCESS_TOKEN"]
-
-# Configure HTTP message signature: http_signature_test
-# The HTTP Signature Header mechanism that can be used by a client to
-# authenticate the sender of a message and ensure that particular headers
-# have not been modified in transit.
-#
-# You can specify the signing key-id, private key path, signing scheme,
-# signing algorithm, list of signed headers and signature max validity.
-# The 'key_id' parameter is an opaque string that the API server can use
-# to lookup the client and validate the signature.
-# The 'private_key_path' parameter should be the path to a file that
-# contains a DER or base-64 encoded private key.
-# The 'private_key_passphrase' parameter is optional. Set the passphrase
-# if the private key is encrypted.
-# The 'signed_headers' parameter is used to specify the list of
-# HTTP headers included when generating the signature for the message.
-# You can specify HTTP headers that you want to protect with a cryptographic
-# signature. Note that proxies may add, modify or remove HTTP headers
-# for legitimate reasons, so you should only add headers that you know
-# will not be modified. For example, if you want to protect the HTTP request
-# body, you can specify the Digest header. In that case, the client calculates
-# the digest of the HTTP request body and includes the digest in the message
-# signature.
-# The 'signature_max_validity' parameter is optional. It is configured as a
-# duration to express when the signature ceases to be valid. The client calculates
-# the expiration date every time it generates the cryptographic signature
-# of an HTTP request. The API server may have its own security policy
-# that controls the maximum validity of the signature. The client max validity
-# must be lower than the server max validity.
-# The time on the client and server must be synchronized, otherwise the
-# server may reject the client signature.
-#
-# The client must use a combination of private key, signing scheme,
-# signing algorithm and hash algorithm that matches the security policy of
-# the API server.
-#
-# See petstore_api.signing for a list of all supported parameters.
-configuration = petstore_api.Configuration(
-    host = "http://petstore.swagger.io:80/v2",
-    signing_info = petstore_api.signing.HttpSigningConfiguration(
-        key_id = 'my-key-id',
-        private_key_path = 'private_key.pem',
-        private_key_passphrase = 'YOUR_PASSPHRASE',
-        signing_scheme = petstore_api.signing.SCHEME_HS2019,
-        signing_algorithm = petstore_api.signing.ALGORITHM_ECDSA_MODE_FIPS_186_3,
-        hash_algorithm = petstore_api.signing.SCHEME_RSA_SHA256,
-        signed_headers = [
-                            petstore_api.signing.HEADER_REQUEST_TARGET,
-                            petstore_api.signing.HEADER_CREATED,
-                            petstore_api.signing.HEADER_EXPIRES,
-                            petstore_api.signing.HEADER_HOST,
-                            petstore_api.signing.HEADER_DATE,
-                            petstore_api.signing.HEADER_DIGEST,
-                            'Content-Type',
-                            'Content-Length',
-                            'User-Agent'
-                         ],
-        signature_max_validity = datetime.timedelta(minutes=5)
-    )
-)
-
-# Enter a context with an instance of the API client
-with petstore_api.ApiClient(configuration) as api_client:
-    # Create an instance of the API class
-    api_instance = petstore_api.PetApi(api_client)
-    status = ['status_example'] # List[str] | Status values that need to be considered for filter
-
-    try:
-        # Finds Pets by status
-        api_response = api_instance.find_pets_by_status(status)
-        print("The response of PetApi->find_pets_by_status:\n")
-        pprint(api_response)
-    except Exception as e:
-        print("Exception when calling PetApi->find_pets_by_status: %s\n" % e)
-```
 
 ### Parameters
 
@@ -548,12 +371,13 @@ Multiple tags can be provided with comma separated strings. Use tag1, tag2, tag3
 
 * OAuth Authentication (petstore_auth):
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
+from petstore_api.models.pet import Pet
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -603,9 +427,12 @@ configuration.access_token = os.environ["ACCESS_TOKEN"]
 # the API server.
 #
 # See petstore_api.signing for a list of all supported parameters.
+from petstore_api import signing
+import datetime
+
 configuration = petstore_api.Configuration(
     host = "http://petstore.swagger.io:80/v2",
-    signing_info = petstore_api.signing.HttpSigningConfiguration(
+    signing_info = petstore_api.HttpSigningConfiguration(
         key_id = 'my-key-id',
         private_key_path = 'private_key.pem',
         private_key_passphrase = 'YOUR_PASSPHRASE',
@@ -642,100 +469,6 @@ with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling PetApi->find_pets_by_tags: %s\n" % e)
 ```
 
-```python
-from __future__ import print_function
-import time
-import os
-import petstore_api
-from petstore_api.rest import ApiException
-from pprint import pprint
-# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
-# See configuration.py for a list of all supported configuration parameters.
-configuration = petstore_api.Configuration(
-    host = "http://petstore.swagger.io:80/v2"
-)
-
-# The client must configure the authentication and authorization parameters
-# in accordance with the API server security policy.
-# Examples for each auth method are provided below, use the example that
-# satisfies your auth use case.
-
-configuration.access_token = os.environ["ACCESS_TOKEN"]
-
-# Configure HTTP message signature: http_signature_test
-# The HTTP Signature Header mechanism that can be used by a client to
-# authenticate the sender of a message and ensure that particular headers
-# have not been modified in transit.
-#
-# You can specify the signing key-id, private key path, signing scheme,
-# signing algorithm, list of signed headers and signature max validity.
-# The 'key_id' parameter is an opaque string that the API server can use
-# to lookup the client and validate the signature.
-# The 'private_key_path' parameter should be the path to a file that
-# contains a DER or base-64 encoded private key.
-# The 'private_key_passphrase' parameter is optional. Set the passphrase
-# if the private key is encrypted.
-# The 'signed_headers' parameter is used to specify the list of
-# HTTP headers included when generating the signature for the message.
-# You can specify HTTP headers that you want to protect with a cryptographic
-# signature. Note that proxies may add, modify or remove HTTP headers
-# for legitimate reasons, so you should only add headers that you know
-# will not be modified. For example, if you want to protect the HTTP request
-# body, you can specify the Digest header. In that case, the client calculates
-# the digest of the HTTP request body and includes the digest in the message
-# signature.
-# The 'signature_max_validity' parameter is optional. It is configured as a
-# duration to express when the signature ceases to be valid. The client calculates
-# the expiration date every time it generates the cryptographic signature
-# of an HTTP request. The API server may have its own security policy
-# that controls the maximum validity of the signature. The client max validity
-# must be lower than the server max validity.
-# The time on the client and server must be synchronized, otherwise the
-# server may reject the client signature.
-#
-# The client must use a combination of private key, signing scheme,
-# signing algorithm and hash algorithm that matches the security policy of
-# the API server.
-#
-# See petstore_api.signing for a list of all supported parameters.
-configuration = petstore_api.Configuration(
-    host = "http://petstore.swagger.io:80/v2",
-    signing_info = petstore_api.signing.HttpSigningConfiguration(
-        key_id = 'my-key-id',
-        private_key_path = 'private_key.pem',
-        private_key_passphrase = 'YOUR_PASSPHRASE',
-        signing_scheme = petstore_api.signing.SCHEME_HS2019,
-        signing_algorithm = petstore_api.signing.ALGORITHM_ECDSA_MODE_FIPS_186_3,
-        hash_algorithm = petstore_api.signing.SCHEME_RSA_SHA256,
-        signed_headers = [
-                            petstore_api.signing.HEADER_REQUEST_TARGET,
-                            petstore_api.signing.HEADER_CREATED,
-                            petstore_api.signing.HEADER_EXPIRES,
-                            petstore_api.signing.HEADER_HOST,
-                            petstore_api.signing.HEADER_DATE,
-                            petstore_api.signing.HEADER_DIGEST,
-                            'Content-Type',
-                            'Content-Length',
-                            'User-Agent'
-                         ],
-        signature_max_validity = datetime.timedelta(minutes=5)
-    )
-)
-
-# Enter a context with an instance of the API client
-with petstore_api.ApiClient(configuration) as api_client:
-    # Create an instance of the API class
-    api_instance = petstore_api.PetApi(api_client)
-    tags = ['tags_example'] # List[str] | Tags to filter by
-
-    try:
-        # Finds Pets by tags
-        api_response = api_instance.find_pets_by_tags(tags)
-        print("The response of PetApi->find_pets_by_tags:\n")
-        pprint(api_response)
-    except Exception as e:
-        print("Exception when calling PetApi->find_pets_by_tags: %s\n" % e)
-```
 
 ### Parameters
 
@@ -775,12 +508,13 @@ Returns a single pet
 
 * Api Key Authentication (api_key):
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
+from petstore_api.models.pet import Pet
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -813,6 +547,7 @@ with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling PetApi->get_pet_by_id: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes
@@ -852,12 +587,13 @@ Update an existing pet
 
 * OAuth Authentication (petstore_auth):
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
+from petstore_api.models.pet import Pet
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -907,9 +643,12 @@ configuration.access_token = os.environ["ACCESS_TOKEN"]
 # the API server.
 #
 # See petstore_api.signing for a list of all supported parameters.
+from petstore_api import signing
+import datetime
+
 configuration = petstore_api.Configuration(
     host = "http://petstore.swagger.io:80/v2",
-    signing_info = petstore_api.signing.HttpSigningConfiguration(
+    signing_info = petstore_api.HttpSigningConfiguration(
         key_id = 'my-key-id',
         private_key_path = 'private_key.pem',
         private_key_passphrase = 'YOUR_PASSPHRASE',
@@ -944,98 +683,6 @@ with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling PetApi->update_pet: %s\n" % e)
 ```
 
-```python
-from __future__ import print_function
-import time
-import os
-import petstore_api
-from petstore_api.rest import ApiException
-from pprint import pprint
-# Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
-# See configuration.py for a list of all supported configuration parameters.
-configuration = petstore_api.Configuration(
-    host = "http://petstore.swagger.io:80/v2"
-)
-
-# The client must configure the authentication and authorization parameters
-# in accordance with the API server security policy.
-# Examples for each auth method are provided below, use the example that
-# satisfies your auth use case.
-
-configuration.access_token = os.environ["ACCESS_TOKEN"]
-
-# Configure HTTP message signature: http_signature_test
-# The HTTP Signature Header mechanism that can be used by a client to
-# authenticate the sender of a message and ensure that particular headers
-# have not been modified in transit.
-#
-# You can specify the signing key-id, private key path, signing scheme,
-# signing algorithm, list of signed headers and signature max validity.
-# The 'key_id' parameter is an opaque string that the API server can use
-# to lookup the client and validate the signature.
-# The 'private_key_path' parameter should be the path to a file that
-# contains a DER or base-64 encoded private key.
-# The 'private_key_passphrase' parameter is optional. Set the passphrase
-# if the private key is encrypted.
-# The 'signed_headers' parameter is used to specify the list of
-# HTTP headers included when generating the signature for the message.
-# You can specify HTTP headers that you want to protect with a cryptographic
-# signature. Note that proxies may add, modify or remove HTTP headers
-# for legitimate reasons, so you should only add headers that you know
-# will not be modified. For example, if you want to protect the HTTP request
-# body, you can specify the Digest header. In that case, the client calculates
-# the digest of the HTTP request body and includes the digest in the message
-# signature.
-# The 'signature_max_validity' parameter is optional. It is configured as a
-# duration to express when the signature ceases to be valid. The client calculates
-# the expiration date every time it generates the cryptographic signature
-# of an HTTP request. The API server may have its own security policy
-# that controls the maximum validity of the signature. The client max validity
-# must be lower than the server max validity.
-# The time on the client and server must be synchronized, otherwise the
-# server may reject the client signature.
-#
-# The client must use a combination of private key, signing scheme,
-# signing algorithm and hash algorithm that matches the security policy of
-# the API server.
-#
-# See petstore_api.signing for a list of all supported parameters.
-configuration = petstore_api.Configuration(
-    host = "http://petstore.swagger.io:80/v2",
-    signing_info = petstore_api.signing.HttpSigningConfiguration(
-        key_id = 'my-key-id',
-        private_key_path = 'private_key.pem',
-        private_key_passphrase = 'YOUR_PASSPHRASE',
-        signing_scheme = petstore_api.signing.SCHEME_HS2019,
-        signing_algorithm = petstore_api.signing.ALGORITHM_ECDSA_MODE_FIPS_186_3,
-        hash_algorithm = petstore_api.signing.SCHEME_RSA_SHA256,
-        signed_headers = [
-                            petstore_api.signing.HEADER_REQUEST_TARGET,
-                            petstore_api.signing.HEADER_CREATED,
-                            petstore_api.signing.HEADER_EXPIRES,
-                            petstore_api.signing.HEADER_HOST,
-                            petstore_api.signing.HEADER_DATE,
-                            petstore_api.signing.HEADER_DIGEST,
-                            'Content-Type',
-                            'Content-Length',
-                            'User-Agent'
-                         ],
-        signature_max_validity = datetime.timedelta(minutes=5)
-    )
-)
-
-# Enter a context with an instance of the API client
-with petstore_api.ApiClient(configuration) as api_client:
-    # Create an instance of the API class
-    api_instance = petstore_api.PetApi(api_client)
-    pet = petstore_api.Pet() # Pet | Pet object that needs to be added to the store
-
-    try:
-        # Update an existing pet
-        api_instance.update_pet(pet)
-    except Exception as e:
-        print("Exception when calling PetApi->update_pet: %s\n" % e)
-```
 
 ### Parameters
 
@@ -1077,12 +724,12 @@ Updates a pet in the store with form data
 
 * OAuth Authentication (petstore_auth):
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -1111,6 +758,7 @@ with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling PetApi->update_pet_with_form: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes
@@ -1151,12 +799,13 @@ uploads an image
 
 * OAuth Authentication (petstore_auth):
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
+from petstore_api.models.api_response import ApiResponse
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -1187,6 +836,7 @@ with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling PetApi->upload_file: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes
@@ -1226,12 +876,13 @@ uploads an image (required)
 
 * OAuth Authentication (petstore_auth):
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
+from petstore_api.models.api_response import ApiResponse
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -1262,6 +913,7 @@ with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling PetApi->upload_file_with_required_file: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes

samples/openapi3/client/petstore/python-nextgen/docs/StoreApi.md

@@ -20,12 +20,12 @@ For valid response try integer IDs with value < 1000. Anything above 1000 or non
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -46,6 +46,7 @@ with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling StoreApi->delete_order: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes
@@ -84,12 +85,12 @@ Returns a map of status codes to quantities
 
 * Api Key Authentication (api_key):
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -121,6 +122,7 @@ with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling StoreApi->get_inventory: %s\n" % e)
 ```
 
+
 ### Parameters
 This endpoint does not need any parameter.
 
@@ -154,12 +156,13 @@ For valid response try integer IDs with value <= 5 or > 10. Other values will ge
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
+from petstore_api.models.order import Order
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -182,6 +185,7 @@ with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling StoreApi->get_order_by_id: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes
@@ -220,12 +224,13 @@ Place an order for a pet
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
+from petstore_api.models.order import Order
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -248,6 +253,7 @@ with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling StoreApi->place_order: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes

samples/openapi3/client/petstore/python-nextgen/docs/UserApi.md

@@ -24,12 +24,13 @@ This can only be done by the logged in user.
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
+from petstore_api.models.user import User
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -50,6 +51,7 @@ with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling UserApi->create_user: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes
@@ -86,12 +88,13 @@ Creates list of users with given input array
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
+from petstore_api.models.user import User
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -112,6 +115,7 @@ with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling UserApi->create_users_with_array_input: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes
@@ -148,12 +152,13 @@ Creates list of users with given input array
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
+from petstore_api.models.user import User
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -174,6 +179,7 @@ with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling UserApi->create_users_with_list_input: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes
@@ -210,12 +216,12 @@ This can only be done by the logged in user.
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -236,6 +242,7 @@ with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling UserApi->delete_user: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes
@@ -273,12 +280,13 @@ Get user by user name
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
+from petstore_api.models.user import User
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -301,6 +309,7 @@ with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling UserApi->get_user_by_name: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes
@@ -339,12 +348,12 @@ Logs user into the system
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -368,6 +377,7 @@ with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling UserApi->login_user: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes
@@ -406,12 +416,12 @@ Logs out current logged in user session
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -431,6 +441,7 @@ with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling UserApi->logout_user: %s\n" % e)
 ```
 
+
 ### Parameters
 This endpoint does not need any parameter.
 
@@ -464,12 +475,13 @@ This can only be done by the logged in user.
 ### Example
 
 ```python
-from __future__ import print_function
 import time
 import os
 import petstore_api
+from petstore_api.models.user import User
 from petstore_api.rest import ApiException
 from pprint import pprint
+
 # Defining the host is optional and defaults to http://petstore.swagger.io:80/v2
 # See configuration.py for a list of all supported configuration parameters.
 configuration = petstore_api.Configuration(
@@ -491,6 +503,7 @@ with petstore_api.ApiClient(configuration) as api_client:
         print("Exception when calling UserApi->update_user: %s\n" % e)
 ```
 
+
 ### Parameters
 
 Name | Type | Description  | Notes

samples/openapi3/client/petstore/python-nextgen/petstore_api/__init__.py

@@ -34,6 +34,8 @@ from petstore_api.exceptions import ApiValueError
 from petstore_api.exceptions import ApiKeyError
 from petstore_api.exceptions import ApiAttributeError
 from petstore_api.exceptions import ApiException
+from petstore_api.signing import HttpSigningConfiguration
+
 # import models into sdk package
 from petstore_api.models.additional_properties_class import AdditionalPropertiesClass
 from petstore_api.models.all_of_with_single_ref import AllOfWithSingleRef