如何从python字符串中删除特定单词或字符串，而又不从Python中的其他单词修剪掉它？

Question

I would like to know how to remove specific words from a string in python without deleting them from other words they composed.

For example if I want to remove 'is' from the following sentence:

s = 'isabelle is in Paris'

The .replace() function delete 'is' in 'isabelle' and in 'Paris':

s = 'isabelle is in Paris'
s.replace('is', '')

It gives me abelle in Par But I want isabelle in Paris . Is there a way to delete only 'is'?

I tried: s.replace(' is ', '') with a space each side of 'is' but in this case 'is' is not removed in the string s = 'Isabelle is, as you know, in Paris'

Thank you

Answer 1

Use a regular expression instead of replacing an ordinary string. You can then use \\b in the regexp to match word boundaries.

import re
s = re.sub(r'\bis\b', '', s)