字符串完全匹配 [英] String exact match

问题描述

我有一个字符串，其中多次出现LOCAL"这个词.我使用 find() 函数来搜索这个词，但它也返回另一个词本地".如何准确匹配本地"一词?

I have a string in which the word "LOCAL" occurs many times. I used the find() function to search for this word but it returns another word "Locally" as well. How can I match the word "local" exactly?

推荐答案

对于这种事情，正则表达式非常有用:

For this kind of thing, regexps are very useful :

import re

print(re.findall('\\blocal\\b', "Hello, locally local test local."))
// ['local', 'local']

\b 基本上表示词边界.可以是空格、标点符号等

\b means word boundary, basically. Can be space, punctuation, etc.

编辑评论:

print(re.sub('\\blocal\\b', '*****', "Hello, LOCAL locally local test local.", flags=re.IGNORECASE))
// Hello, ***** locally ***** test *****.

如果您不想忽略大小写，显然可以删除 flags=re.IGNORECASE.

You can remove flags=re.IGNORECASE if you don't want to ignore the case, obviously.

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