diff --git a/modules/openapi-generator/src/main/resources/python/api_client.mustache b/modules/openapi-generator/src/main/resources/python/api_client.mustache
index 8cba076583d3..790ec2204613 100644
--- a/modules/openapi-generator/src/main/resources/python/api_client.mustache
+++ b/modules/openapi-generator/src/main/resources/python/api_client.mustache
@@ -3,6 +3,7 @@
 from __future__ import absolute_import
 
 import datetime
+from dateutil.parser import parse
 import json
 import mimetypes
 from multiprocessing.pool import ThreadPool
@@ -585,7 +586,6 @@ class ApiClient(object):
         :return: date.
         """
         try:
-            from dateutil.parser import parse
             return parse(string).date()
         except ImportError:
             return string
@@ -604,7 +604,6 @@ class ApiClient(object):
         :return: datetime.
         """
         try:
-            from dateutil.parser import parse
             return parse(string)
         except ImportError:
             return string
diff --git a/samples/client/petstore/python-asyncio/petstore_api/api_client.py b/samples/client/petstore/python-asyncio/petstore_api/api_client.py
index a7ce4f1c6e07..9ad41e84f6d1 100644
--- a/samples/client/petstore/python-asyncio/petstore_api/api_client.py
+++ b/samples/client/petstore/python-asyncio/petstore_api/api_client.py
@@ -11,6 +11,7 @@
 from __future__ import absolute_import
 
 import datetime
+from dateutil.parser import parse
 import json
 import mimetypes
 from multiprocessing.pool import ThreadPool
@@ -578,7 +579,6 @@ class ApiClient(object):
         :return: date.
         """
         try:
-            from dateutil.parser import parse
             return parse(string).date()
         except ImportError:
             return string
@@ -597,7 +597,6 @@ class ApiClient(object):
         :return: datetime.
         """
         try:
-            from dateutil.parser import parse
             return parse(string)
         except ImportError:
             return string
diff --git a/samples/client/petstore/python-tornado/petstore_api/api_client.py b/samples/client/petstore/python-tornado/petstore_api/api_client.py
index 8e626e0851f4..bd360c4b05f2 100644
--- a/samples/client/petstore/python-tornado/petstore_api/api_client.py
+++ b/samples/client/petstore/python-tornado/petstore_api/api_client.py
@@ -11,6 +11,7 @@
 from __future__ import absolute_import
 
 import datetime
+from dateutil.parser import parse
 import json
 import mimetypes
 from multiprocessing.pool import ThreadPool
@@ -580,7 +581,6 @@ class ApiClient(object):
         :return: date.
         """
         try:
-            from dateutil.parser import parse
             return parse(string).date()
         except ImportError:
             return string
@@ -599,7 +599,6 @@ class ApiClient(object):
         :return: datetime.
         """
         try:
-            from dateutil.parser import parse
             return parse(string)
         except ImportError:
             return string
diff --git a/samples/client/petstore/python/petstore_api/api_client.py b/samples/client/petstore/python/petstore_api/api_client.py
index 66a3800593ac..5e7a95a35f3b 100644
--- a/samples/client/petstore/python/petstore_api/api_client.py
+++ b/samples/client/petstore/python/petstore_api/api_client.py
@@ -11,6 +11,7 @@
 from __future__ import absolute_import
 
 import datetime
+from dateutil.parser import parse
 import json
 import mimetypes
 from multiprocessing.pool import ThreadPool
@@ -578,7 +579,6 @@ class ApiClient(object):
         :return: date.
         """
         try:
-            from dateutil.parser import parse
             return parse(string).date()
         except ImportError:
             return string
@@ -597,7 +597,6 @@ class ApiClient(object):
         :return: datetime.
         """
         try:
-            from dateutil.parser import parse
             return parse(string)
         except ImportError:
             return string
diff --git a/samples/openapi3/client/petstore/python/petstore_api/api_client.py b/samples/openapi3/client/petstore/python/petstore_api/api_client.py
index 66a3800593ac..5e7a95a35f3b 100644
--- a/samples/openapi3/client/petstore/python/petstore_api/api_client.py
+++ b/samples/openapi3/client/petstore/python/petstore_api/api_client.py
@@ -11,6 +11,7 @@
 from __future__ import absolute_import
 
 import datetime
+from dateutil.parser import parse
 import json
 import mimetypes
 from multiprocessing.pool import ThreadPool
@@ -578,7 +579,6 @@ class ApiClient(object):
         :return: date.
         """
         try:
-            from dateutil.parser import parse
             return parse(string).date()
         except ImportError:
             return string
@@ -597,7 +597,6 @@ class ApiClient(object):
         :return: datetime.
         """
         try:
-            from dateutil.parser import parse
             return parse(string)
         except ImportError:
             return string