Python 使用正则表达式匹配两个字符串之间的文本
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Match text between two strings with regular expression
提问by Carlos Mu?iz
I would like to use a regular expression that matches any text between two strings:
我想使用匹配两个字符串之间的任何文本的正则表达式：
Part 1. Part 2. Part 3 then more text
In this example, I would like to search for "Part 1" and "Part 3" and then get everything in between which would be: ". Part 2. "
在此示例中，我想搜索“第 1 部分”和“第 3 部分”，然后获取介于两者之间的所有内容：“。第 2 部分。”
I'm using Python 2x.
我正在使用 Python 2x。
采纳答案by Avinash Raj
Use re.search
用 re.search
>>> import re
>>> s = 'Part 1. Part 2. Part 3 then more text'
>>> re.search(r'Part 1\.(.*?)Part 3', s).group(1)
' Part 2. '
>>> re.search(r'Part 1(.*?)Part 3', s).group(1)
'. Part 2. '
Or use re.findall, if there are more than one occurances.
或者使用re.findall，如果出现不止一次。
回答by lord63. j
With regular expression:
使用正则表达式：
>>> import re
>>> s = 'Part 1. Part 2. Part 3 then more text'
>>> re.search(r'Part 1(.*?)Part 3', s).group(1)
'. Part 2. '
Without regular expression, this one works for your example:
没有正则表达式，这个适用于您的示例：
>>> s = 'Part 1. Part 2. Part 3 then more text'
>>> a, b = s.find('Part 1'), s.find('Part 3')
>>> s[a+6:b]
'. Part 2. '
