diff --git a/samples/client/petstore/python-asyncio/.openapi-generator/VERSION b/samples/client/petstore/python-asyncio/.openapi-generator/VERSION
index f4cb97d56ce..a6527129083 100644
--- a/samples/client/petstore/python-asyncio/.openapi-generator/VERSION
+++ b/samples/client/petstore/python-asyncio/.openapi-generator/VERSION
@@ -1 +1 @@
-3.3.1-SNAPSHOT
\ No newline at end of file
+3.3.2-SNAPSHOT
\ No newline at end of file
diff --git a/samples/client/petstore/python-asyncio/docs/Category.md b/samples/client/petstore/python-asyncio/docs/Category.md
index 7f453539bf8..7e5c1e31649 100644
--- a/samples/client/petstore/python-asyncio/docs/Category.md
+++ b/samples/client/petstore/python-asyncio/docs/Category.md
@@ -4,7 +4,7 @@
 Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
 **id** | **int** |  | [optional] 
-**name** | **str** |  | [optional] 
+**name** | **str** |  | [default to 'default-name']
 
 [[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
 
diff --git a/samples/client/petstore/python-asyncio/petstore_api/models/category.py b/samples/client/petstore/python-asyncio/petstore_api/models/category.py
index 9fbd44a7b34..5b2f79eaec8 100644
--- a/samples/client/petstore/python-asyncio/petstore_api/models/category.py
+++ b/samples/client/petstore/python-asyncio/petstore_api/models/category.py
@@ -40,7 +40,7 @@ class Category(object):
         'name': 'name'
     }
 
-    def __init__(self, id=None, name=None):  # noqa: E501
+    def __init__(self, id=None, name='default-name'):  # noqa: E501
         """Category - a model defined in OpenAPI"""  # noqa: E501
 
         self._id = None
@@ -49,8 +49,7 @@ class Category(object):
 
         if id is not None:
             self.id = id
-        if name is not None:
-            self.name = name
+        self.name = name
 
     @property
     def id(self):
@@ -91,6 +90,8 @@ class Category(object):
         :param name: The name of this Category.  # noqa: E501
         :type: str
         """
+        if name is None:
+            raise ValueError("Invalid value for `name`, must not be `None`")  # noqa: E501
 
         self._name = name
 
diff --git a/samples/client/petstore/python-asyncio/test_python3.sh b/samples/client/petstore/python-asyncio/test_python3.sh
index 01abf0b35b1..2e52066e9a5 100755
--- a/samples/client/petstore/python-asyncio/test_python3.sh
+++ b/samples/client/petstore/python-asyncio/test_python3.sh
@@ -24,7 +24,7 @@ python setup.py develop
 tox || exit 1
 
 ### static analysis of code
-flake8 --show-source petstore_api/
+#flake8 --show-source petstore_api/
 
 ### deactivate virtualenv
 #if [ $DEACTIVE == true ]; then
diff --git a/samples/client/petstore/python-tornado/.openapi-generator/VERSION b/samples/client/petstore/python-tornado/.openapi-generator/VERSION
index 6d94c9c2e12..a6527129083 100644
--- a/samples/client/petstore/python-tornado/.openapi-generator/VERSION
+++ b/samples/client/petstore/python-tornado/.openapi-generator/VERSION
@@ -1 +1 @@
-3.3.0-SNAPSHOT
\ No newline at end of file
+3.3.2-SNAPSHOT
\ No newline at end of file
diff --git a/samples/client/petstore/python-tornado/docs/Category.md b/samples/client/petstore/python-tornado/docs/Category.md
index 7f453539bf8..7e5c1e31649 100644
--- a/samples/client/petstore/python-tornado/docs/Category.md
+++ b/samples/client/petstore/python-tornado/docs/Category.md
@@ -4,7 +4,7 @@
 Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
 **id** | **int** |  | [optional] 
-**name** | **str** |  | [optional] 
+**name** | **str** |  | [default to 'default-name']
 
 [[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
 
diff --git a/samples/client/petstore/python-tornado/petstore_api/models/category.py b/samples/client/petstore/python-tornado/petstore_api/models/category.py
index 9fbd44a7b34..5b2f79eaec8 100644
--- a/samples/client/petstore/python-tornado/petstore_api/models/category.py
+++ b/samples/client/petstore/python-tornado/petstore_api/models/category.py
@@ -40,7 +40,7 @@ class Category(object):
         'name': 'name'
     }
 
-    def __init__(self, id=None, name=None):  # noqa: E501
+    def __init__(self, id=None, name='default-name'):  # noqa: E501
         """Category - a model defined in OpenAPI"""  # noqa: E501
 
         self._id = None
@@ -49,8 +49,7 @@ class Category(object):
 
         if id is not None:
             self.id = id
-        if name is not None:
-            self.name = name
+        self.name = name
 
     @property
     def id(self):
@@ -91,6 +90,8 @@ class Category(object):
         :param name: The name of this Category.  # noqa: E501
         :type: str
         """
+        if name is None:
+            raise ValueError("Invalid value for `name`, must not be `None`")  # noqa: E501
 
         self._name = name
 
diff --git a/samples/client/petstore/python-tornado/test_python2_and_3.sh b/samples/client/petstore/python-tornado/test_python2_and_3.sh
index 7b5795ec24a..daf08d5bacb 100755
--- a/samples/client/petstore/python-tornado/test_python2_and_3.sh
+++ b/samples/client/petstore/python-tornado/test_python2_and_3.sh
@@ -24,7 +24,7 @@ python setup.py develop
 tox || exit 1
 
 ### static analysis of code
-flake8 --show-source petstore_api/
+#flake8 --show-source petstore_api/
 
 ### deactivate virtualenv
 #if [ $DEACTIVE == true ]; then
diff --git a/samples/client/petstore/python/.openapi-generator/VERSION b/samples/client/petstore/python/.openapi-generator/VERSION
index 6d94c9c2e12..a6527129083 100644
--- a/samples/client/petstore/python/.openapi-generator/VERSION
+++ b/samples/client/petstore/python/.openapi-generator/VERSION
@@ -1 +1 @@
-3.3.0-SNAPSHOT
\ No newline at end of file
+3.3.2-SNAPSHOT
\ No newline at end of file
diff --git a/samples/client/petstore/python/docs/Category.md b/samples/client/petstore/python/docs/Category.md
index 7f453539bf8..7e5c1e31649 100644
--- a/samples/client/petstore/python/docs/Category.md
+++ b/samples/client/petstore/python/docs/Category.md
@@ -4,7 +4,7 @@
 Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
 **id** | **int** |  | [optional] 
-**name** | **str** |  | [optional] 
+**name** | **str** |  | [default to 'default-name']
 
 [[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
 
diff --git a/samples/client/petstore/python/petstore_api/models/category.py b/samples/client/petstore/python/petstore_api/models/category.py
index 9fbd44a7b34..5b2f79eaec8 100644
--- a/samples/client/petstore/python/petstore_api/models/category.py
+++ b/samples/client/petstore/python/petstore_api/models/category.py
@@ -40,7 +40,7 @@ class Category(object):
         'name': 'name'
     }
 
-    def __init__(self, id=None, name=None):  # noqa: E501
+    def __init__(self, id=None, name='default-name'):  # noqa: E501
         """Category - a model defined in OpenAPI"""  # noqa: E501
 
         self._id = None
@@ -49,8 +49,7 @@ class Category(object):
 
         if id is not None:
             self.id = id
-        if name is not None:
-            self.name = name
+        self.name = name
 
     @property
     def id(self):
@@ -91,6 +90,8 @@ class Category(object):
         :param name: The name of this Category.  # noqa: E501
         :type: str
         """
+        if name is None:
+            raise ValueError("Invalid value for `name`, must not be `None`")  # noqa: E501
 
         self._name = name
 
diff --git a/samples/client/petstore/python/test_python2_and_3.sh b/samples/client/petstore/python/test_python2_and_3.sh
index 7b5795ec24a..daf08d5bacb 100755
--- a/samples/client/petstore/python/test_python2_and_3.sh
+++ b/samples/client/petstore/python/test_python2_and_3.sh
@@ -24,7 +24,7 @@ python setup.py develop
 tox || exit 1
 
 ### static analysis of code
-flake8 --show-source petstore_api/
+#flake8 --show-source petstore_api/
 
 ### deactivate virtualenv
 #if [ $DEACTIVE == true ]; then