Question

我试图删除字符串中的多个空格。我已经阅读了python语言中的正则表达式，并且我试图使它匹配字符串中的所有白色sapces，但没有成功。 return msg部分返回空：

CODE

import re

def correct(string):
    msg = ""
    fmatch = re.match(r'\s', string, re.I|re.L)
    if fmatch:
        msg = fmatch.group
    return msg

print correct("This   is  very funny  and    cool.Indeed!")

Answer 1

要完成此任务，您可以使用re.sub替换使用单个空格字符的连续空格。
例如：

import re

def correct(string):
    fmatch = re.sub(r'\s+', ' ', string)
    return fmatch

print correct("This   is  very funny  and    cool.Indeed!")

输出将是：

This is very funny and cool.Indeed!

Answer 2

Undefined index: image仅匹配字符串的开头。您需要改为使用re.match。

Answer 3

也许这段代码可以帮到你？

import re

def correct(string):
    return " ".join(re.split(' *', string))

Answer 4

一行没有直接导入

ss= "This is very funny and cool.Indeed!"
ss.replace(" ", "  ")
#ss.replace(" ", " "*2) 

#'This  is  very  funny  and  cool.Indeed!'

或者，正如问题所述：

ss= "This is very funny and cool.Indeed!"
ss.replace(" ", "")

#'Thisisveryfunnyandcool.Indeed!'

Python匹配空格

4 个答案: