Fixes Python client Configuration class so each instance uses its own dicts (#4485)

samples/client/petstore/python-asyncio/petstore_api/configuration.py

@@ -12,7 +12,6 @@
 
 from __future__ import absolute_import
 
-import copy
 import logging
 import sys
 import urllib3
@@ -21,21 +20,7 @@ import six
 from six.moves import http_client as httplib
 
 
-class TypeWithDefault(type):
-    def __init__(cls, name, bases, dct):
-        super(TypeWithDefault, cls).__init__(name, bases, dct)
-        cls._default = None
-
-    def __call__(cls, **kwargs):
-        if cls._default is None:
-            cls._default = type.__call__(cls, **kwargs)
-        return copy.copy(cls._default)
-
-    def set_default(cls, default):
-        cls._default = copy.copy(default)
-
-
-class Configuration(six.with_metaclass(TypeWithDefault, object)):
+class Configuration(object):
     """NOTE: This class is auto generated by OpenAPI Generator
 
     Ref: https://openapi-generator.tech
@@ -49,7 +34,7 @@ class Configuration(six.with_metaclass(TypeWithDefault, object)):
     """
 
     def __init__(self, host="http://petstore.swagger.io:80/v2",
-                 api_key={}, api_key_prefix={},
+                 api_key=None, api_key_prefix=None,
                  username="", password=""):
         """Constructor
         """
@@ -60,10 +45,14 @@ class Configuration(six.with_metaclass(TypeWithDefault, object)):
         """Temp file folder for downloading files
         """
         # Authentication Settings
-        self.api_key = api_key
+        self.api_key = {}
+        if api_key:
+            self.api_key = api_key
         """dict to store API key(s)
         """
-        self.api_key_prefix = api_key_prefix
+        self.api_key_prefix = {}
+        if api_key_prefix:
+            self.api_key_prefix = api_key_prefix
         """dict to store API prefix (e.g. Bearer)
         """
         self.refresh_api_key_hook = None