[python-nextgen] Fix binary response (#15076)

* fix binary response in python nextgen client

* update samples

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

@@ -43,6 +43,138 @@ class BodyApi(object):
             api_client = ApiClient.get_default()
         self.api_client = api_client
 
+    @validate_arguments
+    def test_binary_gif(self, **kwargs) -> bytearray:  # noqa: E501
+        """Test binary (gif) response body  # noqa: E501
+
+        Test binary (gif) response body  # noqa: E501
+        This method makes a synchronous HTTP request by default. To make an
+        asynchronous HTTP request, please pass async_req=True
+
+        >>> thread = api.test_binary_gif(async_req=True)
+        >>> result = thread.get()
+
+        :param async_req: Whether to execute the request asynchronously.
+        :type async_req: bool, optional
+        :param _preload_content: if False, the urllib3.HTTPResponse object will
+                                 be returned without reading/decoding response
+                                 data. Default is True.
+        :type _preload_content: bool, optional
+        :param _request_timeout: timeout setting for this request. If one
+                                 number provided, it will be total request
+                                 timeout. It can also be a pair (tuple) of
+                                 (connection, read) timeouts.
+        :return: Returns the result object.
+                 If the method is called asynchronously,
+                 returns the request thread.
+        :rtype: bytearray
+        """
+        kwargs['_return_http_data_only'] = True
+        return self.test_binary_gif_with_http_info(**kwargs)  # noqa: E501
+
+    @validate_arguments
+    def test_binary_gif_with_http_info(self, **kwargs):  # noqa: E501
+        """Test binary (gif) response body  # noqa: E501
+
+        Test binary (gif) response body  # noqa: E501
+        This method makes a synchronous HTTP request by default. To make an
+        asynchronous HTTP request, please pass async_req=True
+
+        >>> thread = api.test_binary_gif_with_http_info(async_req=True)
+        >>> result = thread.get()
+
+        :param async_req: Whether to execute the request asynchronously.
+        :type async_req: bool, optional
+        :param _return_http_data_only: response data without head status code
+                                       and headers
+        :type _return_http_data_only: bool, optional
+        :param _preload_content: if False, the urllib3.HTTPResponse object will
+                                 be returned without reading/decoding response
+                                 data. Default is True.
+        :type _preload_content: bool, optional
+        :param _request_timeout: timeout setting for this request. If one
+                                 number provided, it will be total request
+                                 timeout. It can also be a pair (tuple) of
+                                 (connection, read) timeouts.
+        :param _request_auth: set to override the auth_settings for an a single
+                              request; this effectively ignores the authentication
+                              in the spec for a single request.
+        :type _request_auth: dict, optional
+        :type _content_type: string, optional: force content-type for the request
+        :return: Returns the result object.
+                 If the method is called asynchronously,
+                 returns the request thread.
+        :rtype: tuple(bytearray, status_code(int), headers(HTTPHeaderDict))
+        """
+
+        _params = locals()
+
+        _all_params = [
+        ]
+        _all_params.extend(
+            [
+                'async_req',
+                '_return_http_data_only',
+                '_preload_content',
+                '_request_timeout',
+                '_request_auth',
+                '_content_type',
+                '_headers'
+            ]
+        )
+
+        # validate the arguments
+        for _key, _val in _params['kwargs'].items():
+            if _key not in _all_params:
+                raise ApiTypeError(
+                    "Got an unexpected keyword argument '%s'"
+                    " to method test_binary_gif" % _key
+                )
+            _params[_key] = _val
+        del _params['kwargs']
+
+        _collection_formats = {}
+
+        # process the path parameters
+        _path_params = {}
+
+        # process the query parameters
+        _query_params = []
+        # process the header parameters
+        _header_params = dict(_params.get('_headers', {}))
+        # process the form parameters
+        _form_params = []
+        _files = {}
+        # process the body parameter
+        _body_params = None
+        # set the HTTP header `Accept`
+        _header_params['Accept'] = self.api_client.select_header_accept(
+            ['image/gif'])  # noqa: E501
+
+        # authentication setting
+        _auth_settings = []  # noqa: E501
+
+        _response_types_map = {
+            '200': "bytearray",
+        }
+
+        return self.api_client.call_api(
+            '/binary/gif', 'POST',
+            _path_params,
+            _query_params,
+            _header_params,
+            body=_body_params,
+            post_params=_form_params,
+            files=_files,
+            response_types_map=_response_types_map,
+            auth_settings=_auth_settings,
+            async_req=_params.get('async_req'),
+            _return_http_data_only=_params.get('_return_http_data_only'),  # noqa: E501
+            _preload_content=_params.get('_preload_content', True),
+            _request_timeout=_params.get('_request_timeout'),
+            collection_formats=_collection_formats,
+            _request_auth=_params.get('_request_auth'))
+
     @validate_arguments
     def test_echo_body_pet(self, pet : Annotated[Optional[Pet], Field(description="Pet object that needs to be added to the store")] = None, **kwargs) -> Pet:  # noqa: E501
         """Test body parameter(s)  # noqa: E501

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

@@ -229,7 +229,9 @@ class ApiClient(object):
 
         response_type = response_types_map.get(str(response_data.status), None)
 
-        if response_type not in ["file", "bytes"]:
+        if response_type == "bytearray":
+            response_data.data = response_data.data
+        else:
             match = None
             content_type = response_data.getheader('content-type')
             if content_type is not None:
@@ -238,8 +240,9 @@ class ApiClient(object):
             response_data.data = response_data.data.decode(encoding)
 
         # deserialize response data
-
-        if response_type:
+        if response_type == "bytearray":
+            return_data = response_data.data
+        elif response_type:
             return_data = self.deserialize(response_data, response_type)
         else:
             return_data = None