根据正则表达式匹配对字符串列表进行排序
问题内容：
我有一个文本文件，看起来像：
random text random text, can be anything blabla %A blabla
random text random text, can be anything blabla %D blabla
random text random text, can be anything blabla blabla %F
random text random text, can be anything blabla blabla
random text random text, %C can be anything blabla blabla
当我输入readlines()它时，它将成为一个句子列表。现在，我希望此列表按后面的字母排序%。因此，基本上，将排序应用于上述内容时，它应类似于：
random text random text, can be anything blabla %A blabla
random text random text, %C can be anything blabla blabla
random text random text, can be anything blabla %D blabla
random text random text, can be anything blabla blabla %F
random text random text, can be anything blabla blabla
有什么好方法吗，还是我必须将每个字符串分成小管，然后将字母移动到特定列，然后使用进行排序key=operator.itemgetter(col)？
谢谢
问题答案：
In [1]: def grp(pat, txt):
...: r = re.search(pat, txt)
...: return r.group(0) if r else '&'
In [2]: y
Out[2]:
['random text random text, can be anything blabla %A blabla',
'random text random text, can be anything blabla %D blabla',
'random text random text, can be anything blabla blabla %F',
'random text random text, can be anything blabla blabla',
'random text random text, %C can be anything blabla blabla']
In [3]: y.sort(key=lambda l: grp("%\w", l))
In [4]: y
Out[4]:
['random text random text, can be anything blabla %A blabla',
'random text random text, %C can be anything blabla blabla',
'random text random text, can be anything blabla %D blabla',
'random text random text, can be anything blabla blabla %F',
'random text random text, can be anything blabla blabla']
