code: def reset(self):
          
  
          self.request_head = None
          #self.request_log = None
          self.request_body = None
          self.request_method = None
          self.request_counter = None
          self.exception = None
          if self.transport:
              self.transport.reset()
docs: Reset all attributes which could be modified during previous request
          or which is not initialized yet if this is the new Grab instance.
  
          This methods is automatically called before each network request.