[Python] deserialize enum json response (fix #17789) (#17791)

* deserialize enum json response (python)

* adapt python samples: adding enum deserialization

* add echo test for enum json response deserialization (python)

* update samples

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

@@ -12,6 +12,7 @@ Method | HTTP request | Description
 [**test_echo_body_free_form_object_response_string**](BodyApi.md#test_echo_body_free_form_object_response_string) | **POST** /echo/body/FreeFormObject/response_string | Test free form object
 [**test_echo_body_pet**](BodyApi.md#test_echo_body_pet) | **POST** /echo/body/Pet | Test body parameter(s)
 [**test_echo_body_pet_response_string**](BodyApi.md#test_echo_body_pet_response_string) | **POST** /echo/body/Pet/response_string | Test empty response body
+[**test_echo_body_string_enum**](BodyApi.md#test_echo_body_string_enum) | **POST** /echo/body/string_enum | Test string enum response body
 [**test_echo_body_tag_response_string**](BodyApi.md#test_echo_body_tag_response_string) | **POST** /echo/body/Tag/response_string | Test empty json (request body)
 
 
@@ -550,6 +551,74 @@ No authorization required
 
 [[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
 
+# **test_echo_body_string_enum**
+> StringEnumRef test_echo_body_string_enum(body=body)
+
+Test string enum response body
+
+Test string enum response body
+
+### Example
+
+
+```python
+import openapi_client
+from openapi_client.models.string_enum_ref import StringEnumRef
+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(
+    host = "http://localhost:3000"
+)
+
+
+# Enter a context with an instance of the API client
+with openapi_client.ApiClient(configuration) as api_client:
+    # Create an instance of the API class
+    api_instance = openapi_client.BodyApi(api_client)
+    body = 'body_example' # str | String enum (optional)
+
+    try:
+        # Test string enum response body
+        api_response = api_instance.test_echo_body_string_enum(body=body)
+        print("The response of BodyApi->test_echo_body_string_enum:\n")
+        pprint(api_response)
+    except Exception as e:
+        print("Exception when calling BodyApi->test_echo_body_string_enum: %s\n" % e)
+```
+
+
+
+### Parameters
+
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+ **body** | **str**| String enum | [optional] 
+
+### Return type
+
+[**StringEnumRef**](StringEnumRef.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+ - **Content-Type**: application/json
+ - **Accept**: application/json
+
+### HTTP response details
+
+| Status code | Description | Response headers |
+|-------------|-------------|------------------|
+**200** | Successful operation |  -  |
+
+[[Back to top]](#) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to Model list]](../README.md#documentation-for-models) [[Back to README]](../README.md)
+
 # **test_echo_body_tag_response_string**
 > str test_echo_body_tag_response_string(tag=tag)