是否“仅查找-替换整个单词"?存在于python中? [英] Does "Find-Replace whole word only" exist in python?

问题描述

python 中是否存在仅查找替换整个单词"?

Does "Find-Replace whole word only" exist in python?

例如旧字符串 oldstring 粗体粗体"如果我想用 'new' 替换 'old'，新字符串应该是这样的，

e.g. "old string oldstring boldstring bold" if i want to replace 'old' with 'new', new string should look like,

"new string oldstring boldstring bold"

"new string oldstring boldstring bold"

有人可以帮我吗?

推荐答案

>>> import re
>>> s = "old string oldstring boldstring bold"
>>> re.sub(r'\bold\b', 'new', s)
'new string oldstring boldstring bold'

这是通过使用词边界来完成的.不用说，这个正则表达式不是 Python 特定的，并且在大多数正则表达式引擎中都实现了.

This is done by using word boundaries. Needless to say, this regex is not Python-specific and is implemented in most regex engines.

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