diff --git a/samples/client/petstore/python/petstore_api/api_client.py b/samples/client/petstore/python/petstore_api/api_client.py
index 1614dddbf7d..be6a8924910 100644
--- a/samples/client/petstore/python/petstore_api/api_client.py
+++ b/samples/client/petstore/python/petstore_api/api_client.py
@@ -641,7 +641,7 @@ class ApiClient(object):
 
     def _apply_auth_params(self, headers, queries, resource_path, method, body, auth_setting):
         if auth_setting['in'] == 'cookie':
-            headers['Cookie'] = auth_setting['value']
+            headers['Cookie'] = auth_setting['key'] + "=" + auth_setting['value']
         elif auth_setting['in'] == 'header':
             if auth_setting['type'] != 'http-signature':
                 headers[auth_setting['key']] = auth_setting['value']
diff --git a/samples/client/petstore/python_disallowAdditionalPropertiesIfNotPresent/petstore_api/api_client.py b/samples/client/petstore/python_disallowAdditionalPropertiesIfNotPresent/petstore_api/api_client.py
index 1614dddbf7d..be6a8924910 100644
--- a/samples/client/petstore/python_disallowAdditionalPropertiesIfNotPresent/petstore_api/api_client.py
+++ b/samples/client/petstore/python_disallowAdditionalPropertiesIfNotPresent/petstore_api/api_client.py
@@ -641,7 +641,7 @@ class ApiClient(object):
 
     def _apply_auth_params(self, headers, queries, resource_path, method, body, auth_setting):
         if auth_setting['in'] == 'cookie':
-            headers['Cookie'] = auth_setting['value']
+            headers['Cookie'] = auth_setting['key'] + "=" + auth_setting['value']
         elif auth_setting['in'] == 'header':
             if auth_setting['type'] != 'http-signature':
                 headers[auth_setting['key']] = auth_setting['value']
diff --git a/samples/openapi3/client/extensions/x-auth-id-alias/python/x_auth_id_alias/api_client.py b/samples/openapi3/client/extensions/x-auth-id-alias/python/x_auth_id_alias/api_client.py
index ecabdac2e68..e6c0b2e0602 100644
--- a/samples/openapi3/client/extensions/x-auth-id-alias/python/x_auth_id_alias/api_client.py
+++ b/samples/openapi3/client/extensions/x-auth-id-alias/python/x_auth_id_alias/api_client.py
@@ -641,7 +641,7 @@ class ApiClient(object):
 
     def _apply_auth_params(self, headers, queries, resource_path, method, body, auth_setting):
         if auth_setting['in'] == 'cookie':
-            headers['Cookie'] = auth_setting['value']
+            headers['Cookie'] = auth_setting['key'] + "=" + auth_setting['value']
         elif auth_setting['in'] == 'header':
             if auth_setting['type'] != 'http-signature':
                 headers[auth_setting['key']] = auth_setting['value']
diff --git a/samples/openapi3/client/features/dynamic-servers/python/dynamic_servers/api_client.py b/samples/openapi3/client/features/dynamic-servers/python/dynamic_servers/api_client.py
index 5e851a65574..6106c4b752f 100644
--- a/samples/openapi3/client/features/dynamic-servers/python/dynamic_servers/api_client.py
+++ b/samples/openapi3/client/features/dynamic-servers/python/dynamic_servers/api_client.py
@@ -641,7 +641,7 @@ class ApiClient(object):
 
     def _apply_auth_params(self, headers, queries, resource_path, method, body, auth_setting):
         if auth_setting['in'] == 'cookie':
-            headers['Cookie'] = auth_setting['value']
+            headers['Cookie'] = auth_setting['key'] + "=" + auth_setting['value']
         elif auth_setting['in'] == 'header':
             if auth_setting['type'] != 'http-signature':
                 headers[auth_setting['key']] = auth_setting['value']
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 a3ea0bc5d0f..c14f1d0f1bc 100644
--- a/samples/openapi3/client/petstore/python/petstore_api/api_client.py
+++ b/samples/openapi3/client/petstore/python/petstore_api/api_client.py
@@ -641,7 +641,7 @@ class ApiClient(object):
 
     def _apply_auth_params(self, headers, queries, resource_path, method, body, auth_setting):
         if auth_setting['in'] == 'cookie':
-            headers['Cookie'] = auth_setting['value']
+            headers['Cookie'] = auth_setting['key'] + "=" + auth_setting['value']
         elif auth_setting['in'] == 'header':
             if auth_setting['type'] != 'http-signature':
                 headers[auth_setting['key']] = auth_setting['value']