根据正则表达式匹配对字符串列表进行排序

本文介绍了根据正则表达式匹配对字符串列表进行排序的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我有一个文本文件，看起来像:

I have a text file that looks a bit like:

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()时，它变成一个句子列表.现在，我希望此列表按%之后的字母排序.因此，基本上，将排序应用于上面的内容时，应该看起来像这样:

When I readlines() it in, it becomes a list of sentences. Now I want this list to be sorted by the letter after the %. So basically, when the sort is applied to the above, it should look like:

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

是否有一个好方法，或者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key=operator.itemgetter(col)进行排序?

Is there a good way to do this, or will I have to break each string in to tubles, and then move the letters to a specific column, and then sort using key=operator.itemgetter(col)?

谢谢

推荐答案

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']