Python 正则表达式，多行匹配模式.. 为什么这不起作用? [英] Python regex, matching pattern over multiple lines.. why isn't this working?

问题描述

我知道对于解析，我应该理想地删除所有空格和换行符，但我这样做只是为了快速解决我正在尝试的事情，我不知道为什么它不起作用..我已经包装了不同的区域我的文档中的文本带有诸如####1"之类的包装器，并且我正在尝试基于此进行解析，但无论我尝试什么，它都无法正常工作，我想我正在正确使用多行......感谢任何建议

I know that for parsing I should ideally remove all spaces and linebreaks but I was just doing this as a quick fix for something I was trying and I can't figure out why its not working.. I have wrapped different areas of text in my document with the wrappers like "####1" and am trying to parse based on this but its just not working no matter what I try, I think I am using multiline correctly.. any advice is appreciated

这根本不返回任何结果:

This returns no results at all:

string='
####1
ttteest
####1
ttttteeeestt

####2   

ttest
####2'

import re
pattern = '.*?####(.*?)####'
returnmatch = re.compile(pattern, re.MULTILINE).findall(string)
return returnmatch

推荐答案

Try re.findall(r"####(.*?)s(.*?)s####", string, re.DOTALL)(当然也适用于 re.compile).

Try re.findall(r"####(.*?)s(.*?)s####", string, re.DOTALL) (works with re.compile too, of course).

此正则表达式将返回包含节编号和节内容的元组.

This regexp will return tuples containing the number of the section and the section content.

对于您的示例，这将返回 [('1', 'ttteest'), ('2', ' ttest')].

For your example, this will return [('1', 'ttteest'), ('2', ' ttest')].

(顺便说一句:你的例子不会运行，对于多行字符串，使用 ''' 或 """)

(BTW: your example won't run, for multiline strings, use ''' or """)

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