如何使用regexp获取nestedgroups

Question

我需要你的帮助跟踪正则表达式。 我有短信

"[Hello|Hi]. We are [inviting | calling] you at position [[junior| mid junior]|senior] developer."

我想用正则表达式

^{pr2}$

下面的rexeg (\[[^\[$\]\]]*\])

给了我 [Hello|Hi] [inviting | calling] [junior| mid junior]

那么我应该如何修复它以获得正确的输出呢？在

Answer 1

让我们定义您的字符串并导入：

>>> s = "[Hello|Hi]. We are [inviting | calling] you at position [[junior| mid junior]|senior] developer."
>>> import re

现在，试试：

^{pr2}$

更详细

考虑一下这个脚本：

$ cat script.py
import re
s = "[Hello|Hi]. We are [inviting | calling] you at position [[junior| mid junior]|senior] developer."

matches = re.findall(r'''\[       # Opening bracket
        (?:[^][]* \[ [^][]* \])*  # Zero or more non-bracket characters followed by a [, followed by zero or more non-bracket characters, followed by a ]
        [^][]*                    # Zero or more non-bracket characters
        \]                        # Closing bracket
        ''',
        s,
        re.X)
print('\n'.join(matches))

这将产生输出：

$ python script.py
[Hello|Hi]
[inviting | calling]
[[junior| mid junior]|senior]