如何用空格替换标点符号 python

Question

我使用此代码从sentence中删除punctuation ，但现在我需要用space替换punctuation

sentence = 'hi,how are you?'
temp = ''.join([''.join(c for c in s if c not in string.punctuation) for s in sentence])

outPut => `hihow are you`

我需要这样

outPut => `hi how are you`

我需要最快的方法来做到这一点

Answer 1

您可以使用条件表达式来调整您的生成器理解：

import string

sentence = 'hi,how are you?'
temp = ''.join(c if c not in string.punctuation else ' ' for c in sentence)
print(temp) # hi how are you

Answer 2

您可以在这里使用正则表达式方法：

import string
import re

sentence = 'hi,how are you?'
output = re.sub(r'[' + string.punctuation + r']+', ' ', sentence).strip()
print(output)  # hi how are you

Answer 3

Python 内置 function 用于更换。

sentence = 'The.quick.brown.fox.jumps.over.the.lazy.dog'

print(sentence.replace('.',' '))

Answer 4

您可以使用 package re中的sub方法进行全面替换：

import string 

re.sub(f'[{string.punctuation}]+', " ", s)