Define content type only if the body is not empty (#9766)

* define content type iff the body is not empty

* update samples

Author: romanblack1

modules/openapi-generator/src/main/resources/python/api_client.mustache

@@ -847,9 +847,10 @@ class Endpoint(object):
 
         content_type_headers_list = self.headers_map['content_type']
         if content_type_headers_list:
-            header_list = self.api_client.select_header_content_type(
-                content_type_headers_list)
-            params['header']['Content-Type'] = header_list
+            if params['body'] != "":
+                header_list = self.api_client.select_header_content_type(
+                    content_type_headers_list)
+                params['header']['Content-Type'] = header_list
 
         return self.api_client.call_api(
             self.settings['endpoint_path'], self.settings['http_method'],

samples/client/petstore/python/petstore_api/api_client.py

@@ -826,9 +826,10 @@ def call_with_http_info(self, **kwargs):
 
         content_type_headers_list = self.headers_map['content_type']
         if content_type_headers_list:
-            header_list = self.api_client.select_header_content_type(
-                content_type_headers_list)
-            params['header']['Content-Type'] = header_list
+            if params['body'] != "":
+                header_list = self.api_client.select_header_content_type(
+                    content_type_headers_list)
+                params['header']['Content-Type'] = header_list
 
         return self.api_client.call_api(
             self.settings['endpoint_path'], self.settings['http_method'],

samples/client/petstore/python_disallowAdditionalPropertiesIfNotPresent/petstore_api/api_client.py

@@ -826,9 +826,10 @@ def call_with_http_info(self, **kwargs):
 
         content_type_headers_list = self.headers_map['content_type']
         if content_type_headers_list:
-            header_list = self.api_client.select_header_content_type(
-                content_type_headers_list)
-            params['header']['Content-Type'] = header_list
+            if params['body'] != "":
+                header_list = self.api_client.select_header_content_type(
+                    content_type_headers_list)
+                params['header']['Content-Type'] = header_list
 
         return self.api_client.call_api(
             self.settings['endpoint_path'], self.settings['http_method'],

samples/openapi3/client/extensions/x-auth-id-alias/python/x_auth_id_alias/api_client.py

@@ -826,9 +826,10 @@ def call_with_http_info(self, **kwargs):
 
         content_type_headers_list = self.headers_map['content_type']
         if content_type_headers_list:
-            header_list = self.api_client.select_header_content_type(
-                content_type_headers_list)
-            params['header']['Content-Type'] = header_list
+            if params['body'] != "":
+                header_list = self.api_client.select_header_content_type(
+                    content_type_headers_list)
+                params['header']['Content-Type'] = header_list
 
         return self.api_client.call_api(
             self.settings['endpoint_path'], self.settings['http_method'],

samples/openapi3/client/features/dynamic-servers/python/dynamic_servers/api_client.py

@@ -826,9 +826,10 @@ def call_with_http_info(self, **kwargs):
 
         content_type_headers_list = self.headers_map['content_type']
         if content_type_headers_list:
-            header_list = self.api_client.select_header_content_type(
-                content_type_headers_list)
-            params['header']['Content-Type'] = header_list
+            if params['body'] != "":
+                header_list = self.api_client.select_header_content_type(
+                    content_type_headers_list)
+                params['header']['Content-Type'] = header_list
 
         return self.api_client.call_api(
             self.settings['endpoint_path'], self.settings['http_method'],

samples/openapi3/client/petstore/python/petstore_api/api_client.py

@@ -833,9 +833,10 @@ def call_with_http_info(self, **kwargs):
 
         content_type_headers_list = self.headers_map['content_type']
         if content_type_headers_list:
-            header_list = self.api_client.select_header_content_type(
-                content_type_headers_list)
-            params['header']['Content-Type'] = header_list
+            if params['body'] != "":
+                header_list = self.api_client.select_header_content_type(
+                    content_type_headers_list)
+                params['header']['Content-Type'] = header_list
 
         return self.api_client.call_api(
             self.settings['endpoint_path'], self.settings['http_method'],