Python匹配空格

Question

我试图删除一个字符串中的多个空格。 我已经阅读了python langauge中的正则表达式，并尝试使其与字符串中的所有白色空格匹配，但没有成功。 return msg部分返回空：

码

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，您可以使用单个空格字符代替连续的空格，例如，使用re.sub 。
例：

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

re.match仅在字符串的开头匹配。 您需要改用re.search 。

Answer 3

也许这段代码对您有帮助？

import re

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

Answer 4

一线无直接进口

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

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

或者，如问题所述：

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

#'Thisisveryfunnyandcool.Indeed!'