code: def is_zhuyin_compatible(s):
      
      printable_zhuyin = zhon.zhuyin.characters + zhon.zhuyin.marks + ' '
      return _is_pattern_match('[%s]+' % printable_zhuyin, s)
docs: Checks if *s* is consists of Zhuyin-compatible characters.
  
      This does not check if *s* contains valid Zhuyin syllables; for that
      see :func:`is_zhuyin`.
  
      Besides Zhuyin characters and tone marks, spaces are also accepted.
      This function checks that all characters in *s* exist in
      :data:`zhon.zhuyin.characters`, :data:`zhon.zhuyin.marks`, or ``' '``.