code: def Char(self, char, n = 1, dl = 0):
          
          if len(char) == 1:
              self.Delay(dl)
              self.keyboard.tap_key(char)
          else:
              raise Exception("""method "Char()" can only take one character.""")
docs: 输入任意单字符n次，只要能在键盘上打出来的字符都可以