code: def getch(self):
          
          ch = self._get_one_char()
          if self.keep_input_clean:
              self.clear_input_buffer()
  
          try:
              # accept only unicode characters (for Python 2)
              uch = to_unicode(ch, 'ascii')
          except UnicodeError:
              return ''
  
          return uch if self._check_key_repeat(uch) else ''
docs: Read one character from stdin.
  
          If stdin is not a tty or set `getch_enabled`=False, read input as one line.
          :return: unicode: