python - 如何从 Python 中的字符串中删除所有空格

Question

我从 XML 中得到一个字符串，如下所示:

This is the                                     Sample text I need to get       
all this               but only with single spaces

实际上我正在使用以下正则表达式，它将匹配模式转换为空格，但我需要将它们剥离而不是替换为空格。

应该输出上面的字符串:

This is the Sample text I need to get all this but only with single spaces

Answer 1

没有正则表达式的简单解决方案:

s = 'This is the                                     Sample text I need to get       all this               but only with single spaces'
' '.join(s.split())
#'This is the Sample text I need to get all this but only with single spaces'

为了完整起见，我会将 ekhumoro 的评论添加到我的回答中:

It's worth pointing out that split() does more than simply splitting on runs of whitespace: it also strips any whitespace at the beginning and end of the input (which is usually what is wanted). It also correctly handles non-breaking spaces if the input is unicode (which will probably be relevant for XML).