Python 正则表达式必须去除引号之间的空格 [英] Python Regular expression must strip whitespace except between quotes

问题描述

我需要一种方法来删除字符串中的所有空格，除非空格在引号之间.

I need a way to remove all whitespace from a string, except when that whitespace is between quotes.

result = re.sub('".*?"', "", content)

这将匹配引号之间的任何内容，但现在它需要忽略该匹配并为空格添加匹配..

This will match anything between quotes, but now it needs to ignore that match and add matches for whitespace..

推荐答案

我认为您无法使用单个正则表达式做到这一点.一种方法是在引号上拆分字符串，将空白剥离正则表达式应用于结果列表的每个其他项目，然后重新加入列表.

I don't think you're going to be able to do that with a single regex. One way to do it is to split the string on quotes, apply the whitespace-stripping regex to every other item of the resulting list, and then re-join the list.

import re

def stripwhite(text):
    lst = text.split('"')
    for i, item in enumerate(lst):
        if not i % 2:
            lst[i] = re.sub("\s+", "", item)
    return '"'.join(lst)

print stripwhite('This is a string with some "text in quotes."')

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