如何删除python中仅包含数字的单词? [英] How to remove words containing only numbers in python?

问题描述

我在 Python 中有一些由数字和字母组成的文本.像这样:

s = "12 word word2"

从字符串 s 中，我想删除所有包含仅数字

的单词

所以我希望结果是

s = "word word2"

这是我拥有的正则表达式，但它适用于字母表，即它用空格替换每个字母表.

re.sub('[\ 0-9\ ]+', ' ', line)

有人可以帮忙告诉我出了什么问题吗?另外，有没有比正则表达式更省时的方法?

谢谢！

解决方案

你可以使用这个正则表达式:

<预><代码>>>>s = "12 字 word2">>>打印 re.sub(r'\b[0-9]+\b\s*', '', s)字字2

\b 用于单词边界，\s* 将删除数字单词后的 0 个或多个空格.

I have some text in Python which is composed of numbers and alphabets. Something like this:

s = "12 word word2"

From the string s, I want to remove all the words containing only numbers

So I want the result to be

s = "word word2"

This is a regex I have but it works on alphabets i.e. it replaces each alphabet by a space.

re.sub('[\ 0-9\ ]+', ' ', line)

Can someone help in telling me what is wrong? Also, is there a more time-efficient way to do this than regex?

Thanks!

解决方案

You can use this regex:

>>> s = "12 word word2"
>>> print re.sub(r'\b[0-9]+\b\s*', '', s)
word word2

\b is used for word boundary and \s* will remove 0 or more spaces after your number word.

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