我正在嘗試編寫一個簡單的 lex 解析器。目前的應對方式是：from ply import lextokens = (      'COMMENT',      'OTHER'  )  t_COMMENT = r'^\#.*\n'  t_OTHER = r'^[^\#].*\n'  def t_error(t):      raise TypeError("Unknown text '%s'" % (t.value,))  lex.lex()lex.input(yaml)  for tok in iter(lex.token, None):      print repr(tok.type), repr(tok.value)但是無法解析簡單的輸入文件：    # This is a real comment    #And this one also    #/*    # *    # *Variable de feeu    # */    ma_var: True    It is done, over, kaput    具有以下輸出：l'COMMENT' '# This is a real comment\n'Traceback (most recent call last):  File "parser_adoc.py", line 62, in <module>    main2()  File "parser_adoc.py", line 57, in main2    for tok in iter(lex.token, None):  File "/usr/lib/python2.7/site-packages/ply/lex.py", line 384, in token    newtok = self.lexerrorf(tok)  File "parser_adoc.py", line 44, in t_error    raise TypeError("Unknown text '%s'" % (t.value,))TypeError: Unknown text '#And this one also#/*# *# *Variable de feeu# */ma_var: Truethis is done'總之，我定義了 2 個正則表達式：一個以開頭的行 #一個用于不以開頭的行 #但它不起作用。我不明白我的正則表達式有什么問題。你能幫忙嗎？