Python - 仅保留字母数字和空格，并忽略非 ASCII [英] Python - keep only alphanumeric and space, and ignore non-ASCII

问题描述

我用这一行来删除除空格之外的所有非字母数字字符

I have this line to remove all non-alphanumeric characters except spaces

re.sub(r'\W+', '', s)

尽管如此，它仍然保留了非英文字符.

Although, it still keeps non-English characters.

例如如果我有

re.sub(r'\W+', '', 'This is a sentence, and here are non-english 托利 苏 !!11')

我想获得作为输出:

> 'This is a sentence and here are non-english  11'

推荐答案

re.sub(r'[^A-Za-z0-9 ]+', '', s)

(编辑)澄清:[] 创建一个字符列表.^ 否定列表.A-Za-z 是英文字母， 是空格.对于其中的任何一个或多个(即不是 A-Z、a-z 或空格的任何内容)，请替换为空字符串.

(Edit) To clarify: The [] create a list of chars. The ^ negates the list. A-Za-z are the English alphabet and is space. For any one or more of these (that is, anything that is not A-Z, a-z, or space,) replace with the empty string.

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