to fix #2306

modules/swagger-codegen/src/main/java/io/swagger/codegen/CodegenModel.java

@@ -7,6 +7,7 @@ import java.util.*;
 public class CodegenModel {
     public String parent, parentSchema;
     public String name, classname, description, classVarName, modelJson, dataType;
+    public String classFilename; // store the class file name, mainly used for import
     public String unescapedDescription;
     public String discriminator;
     public String defaultValue;

modules/swagger-codegen/src/main/java/io/swagger/codegen/DefaultCodegen.java

@@ -877,6 +877,7 @@ public class DefaultCodegen {
         m.unescapedDescription = model.getDescription();
         m.classname = toModelName(name);
         m.classVarName = toVarName(name);
+        m.classFilename = toModelFilename(name);
         m.modelJson = Json.pretty(model);
         m.externalDocs = model.getExternalDocs();
         m.vendorExtensions = model.getVendorExtensions();

modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/PythonClientCodegen.java

@@ -212,8 +212,7 @@ public class PythonClientCodegen extends DefaultCodegen implements CodegenConfig
 
     @Override
     public String toModelName(String name) {
-        name = sanitizeName(modelNamePrefix + name + modelNameSuffix); // FIXME: a parameter should not be assigned. Also declare the methods parameters as 'final'.
-
+        name = sanitizeName(name); // FIXME: a parameter should not be assigned. Also declare the methods parameters as 'final'.
         // remove dollar sign
         name = name.replaceAll("$", "");
 
@@ -223,6 +222,14 @@ public class PythonClientCodegen extends DefaultCodegen implements CodegenConfig
             name = "object_" + name; // e.g. return => ObjectReturn (after camelize)
         }
 
+        if (!StringUtils.isEmpty(modelNamePrefix)) {
+            name = modelNamePrefix + "_" + name;
+        }
+
+        if (!StringUtils.isEmpty(modelNameSuffix)) {
+            name = name + "_" + modelNameSuffix;
+        }
+
         // camelize the model name
         // phone_number => PhoneNumber
         return camelize(name);
@@ -230,6 +237,10 @@ public class PythonClientCodegen extends DefaultCodegen implements CodegenConfig
 
     @Override
     public String toModelFilename(String name) {
+        name = sanitizeName(name); // FIXME: a parameter should not be assigned. Also declare the methods parameters as 'final'.
+        // remove dollar sign
+        name = name.replaceAll("$", "");
+
         // model name cannot use reserved keyword, e.g. return
         if (isReservedWord(name)) {
             LOGGER.warn(name + " (reserved word) cannot be used as model filename. Renamed to " + underscore(dropDots("object_" + name)));

modules/swagger-codegen/src/main/resources/python/__init__model.mustache

@@ -1,5 +1,5 @@
 from __future__ import absolute_import
 
 # import models into model package
-{{#models}}{{#model}}from .{{classVarName}} import {{classname}}{{/model}}
+{{#models}}{{#model}}from .{{classFilename}} import {{classname}}{{/model}}
 {{/models}}

modules/swagger-codegen/src/main/resources/python/__init__package.mustache

@@ -1,7 +1,7 @@
 from __future__ import absolute_import
 
 # import models into sdk package
-{{#models}}{{#model}}from .models.{{classVarName}} import {{classname}}
+{{#models}}{{#model}}from .models.{{classFilename}} import {{classname}}
 {{/model}}{{/models}}
 # import apis into sdk package
 {{#apiInfo}}{{#apis}}from .apis.{{classVarName}} import {{classname}}

modules/swagger-codegen/src/test/resources/2_0/petstore.json

@@ -1251,6 +1251,28 @@
       "xml": {
         "name": "Order"
       }
+    },
+    "$special[model.name]": {
+      "properties": {
+        "$special[property.name]": {
+          "type": "integer",
+          "format": "int64"
+        }
+      },
+      "xml": {
+        "name": "$special[model.name]"
+      }
+    },
+    "Return": {
+      "properties": {
+        "return": {
+          "type": "integer",
+          "format": "int32"
+        }
+      },
+      "xml": {
+        "name": "Return"
+      }
     }
   }
 }

samples/client/petstore/python/swagger_client/__init__.py

@@ -5,7 +5,10 @@ from .models.user import User
 from .models.category import Category
 from .models.pet import Pet
 from .models.tag import Tag
+from .models.object_return import ObjectReturn
 from .models.order import Order
+from .models.special_model_name import SpecialModelName
+from .models.inline_response_200 import InlineResponse200
 
 # import apis into sdk package
 from .apis.user_api import UserApi

samples/client/petstore/python/swagger_client/apis/pet_api.py

@@ -664,6 +664,83 @@ class PetApi(object):
                                             callback=params.get('callback'))
         return response
 
+    def get_pet_by_id_in_object(self, pet_id, **kwargs):
+        """
+        Fake endpoint to test inline arbitrary object return by 'Find pet by ID'
+        Returns a pet when ID < 10.  ID > 10 or nonintegers will simulate API error conditions
+
+        This method makes a synchronous HTTP request by default. To make an
+        asynchronous HTTP request, please define a `callback` function
+        to be invoked when receiving the response.
+        >>> def callback_function(response):
+        >>>     pprint(response)
+        >>>
+        >>> thread = api.get_pet_by_id_in_object(pet_id, callback=callback_function)
+
+        :param callback function: The callback function
+            for asynchronous request. (optional)
+        :param int pet_id: ID of pet that needs to be fetched (required)
+        :return: InlineResponse200
+                 If the method is called asynchronously,
+                 returns the request thread.
+        """
+
+        all_params = ['pet_id']
+        all_params.append('callback')
+
+        params = locals()
+        for key, val in iteritems(params['kwargs']):
+            if key not in all_params:
+                raise TypeError(
+                    "Got an unexpected keyword argument '%s'"
+                    " to method get_pet_by_id_in_object" % key
+                )
+            params[key] = val
+        del params['kwargs']
+
+        # verify the required parameter 'pet_id' is set
+        if ('pet_id' not in params) or (params['pet_id'] is None):
+            raise ValueError("Missing the required parameter `pet_id` when calling `get_pet_by_id_in_object`")
+
+        resource_path = '/pet/{petId}?response=inline_arbitrary_object'.replace('{format}', 'json')
+        path_params = {}
+        if 'pet_id' in params:
+            path_params['petId'] = params['pet_id']
+
+        query_params = {}
+
+        header_params = {}
+
+        form_params = []
+        local_var_files = {}
+
+        body_params = None
+
+        # HTTP header `Accept`
+        header_params['Accept'] = self.api_client.\
+            select_header_accept(['application/json', 'application/xml'])
+        if not header_params['Accept']:
+            del header_params['Accept']
+
+        # HTTP header `Content-Type`
+        header_params['Content-Type'] = self.api_client.\
+            select_header_content_type([])
+
+        # Authentication setting
+        auth_settings = ['api_key', 'petstore_auth']
+
+        response = self.api_client.call_api(resource_path, 'GET',
+                                            path_params,
+                                            query_params,
+                                            header_params,
+                                            body=body_params,
+                                            post_params=form_params,
+                                            files=local_var_files,
+                                            response_type='InlineResponse200',
+                                            auth_settings=auth_settings,
+                                            callback=params.get('callback'))
+        return response
+
     def pet_pet_idtesting_byte_arraytrue_get(self, pet_id, **kwargs):
         """
         Fake endpoint to test byte array return by 'Find pet by ID'

samples/client/petstore/python/swagger_client/apis/store_api.py

@@ -190,6 +190,77 @@ class StoreApi(object):
                                             callback=params.get('callback'))
         return response
 
+    def get_inventory_in_object(self, **kwargs):
+        """
+        Fake endpoint to test arbitrary object return by 'Get inventory'
+        Returns an arbitrary object which is actually a map of status codes to quantities
+
+        This method makes a synchronous HTTP request by default. To make an
+        asynchronous HTTP request, please define a `callback` function
+        to be invoked when receiving the response.
+        >>> def callback_function(response):
+        >>>     pprint(response)
+        >>>
+        >>> thread = api.get_inventory_in_object(callback=callback_function)
+
+        :param callback function: The callback function
+            for asynchronous request. (optional)
+        :return: object
+                 If the method is called asynchronously,
+                 returns the request thread.
+        """
+
+        all_params = []
+        all_params.append('callback')
+
+        params = locals()
+        for key, val in iteritems(params['kwargs']):
+            if key not in all_params:
+                raise TypeError(
+                    "Got an unexpected keyword argument '%s'"
+                    " to method get_inventory_in_object" % key
+                )
+            params[key] = val
+        del params['kwargs']
+
+
+        resource_path = '/store/inventory?response=arbitrary_object'.replace('{format}', 'json')
+        path_params = {}
+
+        query_params = {}
+
+        header_params = {}
+
+        form_params = []
+        local_var_files = {}
+
+        body_params = None
+
+        # HTTP header `Accept`
+        header_params['Accept'] = self.api_client.\
+            select_header_accept(['application/json', 'application/xml'])
+        if not header_params['Accept']:
+            del header_params['Accept']
+
+        # HTTP header `Content-Type`
+        header_params['Content-Type'] = self.api_client.\
+            select_header_content_type([])
+
+        # Authentication setting
+        auth_settings = ['api_key']
+
+        response = self.api_client.call_api(resource_path, 'GET',
+                                            path_params,
+                                            query_params,
+                                            header_params,
+                                            body=body_params,
+                                            post_params=form_params,
+                                            files=local_var_files,
+                                            response_type='object',
+                                            auth_settings=auth_settings,
+                                            callback=params.get('callback'))
+        return response
+
     def place_order(self, **kwargs):
         """
         Place an order for a pet

samples/client/petstore/python/swagger_client/models/__init__.py

@@ -5,4 +5,7 @@ from .user import User
 from .category import Category
 from .pet import Pet
 from .tag import Tag
+from .object_return import ObjectReturn
 from .order import Order
+from .special_model_name import SpecialModelName
+from .inline_response_200 import InlineResponse200