code: def tap_key(self, key_name, n=1, interval=0, pre_dl=None, post_dl=None):
          
          key = self._parse_key(key_name)
          self.delay(pre_dl)
          self.k.tap_key(key, n, interval)
          self.delay(post_dl)
docs: Tap a key on keyboard for ``n`` times, with ``interval`` seconds of
          interval. Key is declared by it's name
  
          Example::
  
              bot.tap_key("a")
              bot.tap_key(1)
              bot.tap_key("up")
              bot.tap_key("space")
              bot.tap_key("enter")
              bot.tap_key("tab")
  
          **中文文档**
  
          以 ``interval`` 中定义的频率按下某个按键 ``n`` 次。接受按键名作为输入。