在python中使用正则表达式剥离标签

Question

How can I go about stripping the tags off this list:

['</span>A walk in the park<span class="html-tag"]

I managed to use (r'(?<=</span>)[^>]+') to remove the first tag but cant figure out how to remove the second. I know regular expressions ain't the way to go for dealing with tags but just want to figure this out.

Answer 1

You can use:

(?:>)(.*)(?:<)

In regex, every opened and closed round brakets defines a group. Here, we have 3 couples of rounded brackets but the first and the last one have a ?: inside. That means that the group being defined is a non-capturing group so it is needed to match the pattern but it will not be returned by the parser. Instead, what you want is in group #1.

Answer 2

You were quite close with your regex. After the position found by the lookbehind, you just want to read up to the next < :

(?<=</span>)[^<]+

Check it out on regex101

$ cat test.py
import re
s='</span>A walk in the park<span class="html-tag"'
print re.findall(r'(?<=</span>)[^<]+', s)

$ python test.py
['A walk in the park']