code: def send_line(self, line, parse_result=True):
          
          self.vw_process.sendline(line)  # Send line, along with newline
          result = self._get_response(parse_result=parse_result)
          return result
docs: Submit a raw line of text to the VW instance, returning a 
          VWResult() object.
  
          If 'parse_result' is False, ignore the result and return None.