diff --git a/modules/openapi-generator/src/main/resources/python/python-experimental/rest.mustache b/modules/openapi-generator/src/main/resources/python/python-experimental/rest.mustache
index d5edf9535dcb..746f9844344b 100644
--- a/modules/openapi-generator/src/main/resources/python/python-experimental/rest.mustache
+++ b/modules/openapi-generator/src/main/resources/python/python-experimental/rest.mustache
@@ -129,7 +129,7 @@ class RESTClientObject(object):
 
         timeout = None
         if _request_timeout:
-            if isinstance(_request_timeout, int):  # noqa: E501,F821
+            if isinstance(_request_timeout, (int, float)):  # noqa: E501,F821
                 timeout = urllib3.Timeout(total=_request_timeout)
             elif (isinstance(_request_timeout, tuple) and
                   len(_request_timeout) == 2):
diff --git a/modules/openapi-generator/src/main/resources/python/rest.mustache b/modules/openapi-generator/src/main/resources/python/rest.mustache
index fe7abfdfc048..51f72f6e1ff6 100644
--- a/modules/openapi-generator/src/main/resources/python/rest.mustache
+++ b/modules/openapi-generator/src/main/resources/python/rest.mustache
@@ -133,7 +133,7 @@ class RESTClientObject(object):
 
         timeout = None
         if _request_timeout:
-            if isinstance(_request_timeout, (int, ) if six.PY3 else (int, long)):  # noqa: E501,F821
+            if isinstance(_request_timeout, six.integer_types + (float, )):  # noqa: E501,F821
                 timeout = urllib3.Timeout(total=_request_timeout)
             elif (isinstance(_request_timeout, tuple) and
                   len(_request_timeout) == 2):
diff --git a/samples/client/petstore/python-experimental/petstore_api/rest.py b/samples/client/petstore/python-experimental/petstore_api/rest.py
index fb424024afce..8ca3604ebbc1 100644
--- a/samples/client/petstore/python-experimental/petstore_api/rest.py
+++ b/samples/client/petstore/python-experimental/petstore_api/rest.py
@@ -137,7 +137,7 @@ def request(self, method, url, query_params=None, headers=None,
 
         timeout = None
         if _request_timeout:
-            if isinstance(_request_timeout, int):  # noqa: E501,F821
+            if isinstance(_request_timeout, (int, float)):  # noqa: E501,F821
                 timeout = urllib3.Timeout(total=_request_timeout)
             elif (isinstance(_request_timeout, tuple) and
                   len(_request_timeout) == 2):
diff --git a/samples/client/petstore/python/petstore_api/rest.py b/samples/client/petstore/python/petstore_api/rest.py
index 973161ca7aef..9dfb1ffefd57 100644
--- a/samples/client/petstore/python/petstore_api/rest.py
+++ b/samples/client/petstore/python/petstore_api/rest.py
@@ -141,7 +141,7 @@ def request(self, method, url, query_params=None, headers=None,
 
         timeout = None
         if _request_timeout:
-            if isinstance(_request_timeout, (int, ) if six.PY3 else (int, long)):  # noqa: E501,F821
+            if isinstance(_request_timeout, six.integer_types + (float, )):  # noqa: E501,F821
                 timeout = urllib3.Timeout(total=_request_timeout)
             elif (isinstance(_request_timeout, tuple) and
                   len(_request_timeout) == 2):
diff --git a/samples/openapi3/client/extensions/x-auth-id-alias/python-experimental/x_auth_id_alias/rest.py b/samples/openapi3/client/extensions/x-auth-id-alias/python-experimental/x_auth_id_alias/rest.py
index 2042ee8caa1f..a7fc81ae0aa2 100644
--- a/samples/openapi3/client/extensions/x-auth-id-alias/python-experimental/x_auth_id_alias/rest.py
+++ b/samples/openapi3/client/extensions/x-auth-id-alias/python-experimental/x_auth_id_alias/rest.py
@@ -137,7 +137,7 @@ def request(self, method, url, query_params=None, headers=None,
 
         timeout = None
         if _request_timeout:
-            if isinstance(_request_timeout, int):  # noqa: E501,F821
+            if isinstance(_request_timeout, (int, float)):  # noqa: E501,F821
                 timeout = urllib3.Timeout(total=_request_timeout)
             elif (isinstance(_request_timeout, tuple) and
                   len(_request_timeout) == 2):
diff --git a/samples/openapi3/client/features/dynamic-servers/python-experimental/dynamic_servers/rest.py b/samples/openapi3/client/features/dynamic-servers/python-experimental/dynamic_servers/rest.py
index efe36544bf08..b277cbb9ff1c 100644
--- a/samples/openapi3/client/features/dynamic-servers/python-experimental/dynamic_servers/rest.py
+++ b/samples/openapi3/client/features/dynamic-servers/python-experimental/dynamic_servers/rest.py
@@ -137,7 +137,7 @@ def request(self, method, url, query_params=None, headers=None,
 
         timeout = None
         if _request_timeout:
-            if isinstance(_request_timeout, int):  # noqa: E501,F821
+            if isinstance(_request_timeout, (int, float)):  # noqa: E501,F821
                 timeout = urllib3.Timeout(total=_request_timeout)
             elif (isinstance(_request_timeout, tuple) and
                   len(_request_timeout) == 2):
diff --git a/samples/openapi3/client/petstore/python-experimental/petstore_api/rest.py b/samples/openapi3/client/petstore/python-experimental/petstore_api/rest.py
index fb424024afce..8ca3604ebbc1 100644
--- a/samples/openapi3/client/petstore/python-experimental/petstore_api/rest.py
+++ b/samples/openapi3/client/petstore/python-experimental/petstore_api/rest.py
@@ -137,7 +137,7 @@ def request(self, method, url, query_params=None, headers=None,
 
         timeout = None
         if _request_timeout:
-            if isinstance(_request_timeout, int):  # noqa: E501,F821
+            if isinstance(_request_timeout, (int, float)):  # noqa: E501,F821
                 timeout = urllib3.Timeout(total=_request_timeout)
             elif (isinstance(_request_timeout, tuple) and
                   len(_request_timeout) == 2):
diff --git a/samples/openapi3/client/petstore/python/petstore_api/rest.py b/samples/openapi3/client/petstore/python/petstore_api/rest.py
index 973161ca7aef..9dfb1ffefd57 100644
--- a/samples/openapi3/client/petstore/python/petstore_api/rest.py
+++ b/samples/openapi3/client/petstore/python/petstore_api/rest.py
@@ -141,7 +141,7 @@ def request(self, method, url, query_params=None, headers=None,
 
         timeout = None
         if _request_timeout:
-            if isinstance(_request_timeout, (int, ) if six.PY3 else (int, long)):  # noqa: E501,F821
+            if isinstance(_request_timeout, six.integer_types + (float, )):  # noqa: E501,F821
                 timeout = urllib3.Timeout(total=_request_timeout)
             elif (isinstance(_request_timeout, tuple) and
                   len(_request_timeout) == 2):