parameters: (self,return_data)
docstring: 发送返回值
docstring_summary: 发送返回值
docstring_tokens: 发送返回值
function: def send_return_value(self,return_data):
          '''
                           发送返回值
          '''
          self.wfile.write(return_data.encode("utf-8"))
function_tokens: def send_return_value ( self , return_data ) : self . wfile . write ( return_data . encode ( "utf-8" ) )