在大写字母前插入空格的pythonic方法

问题描述

我有一个文件，我正在通过 python 脚本更改其格式.我在这个文件中有几个驼峰式字符串，我只想在大写字母前插入一个空格 - 所以WordWordWord"变成了Word Word Word".

我有限的正则表达式经验刚刚在我身上停滞不前 - 有人可以想到一个像样的正则表达式来做到这一点，或者(更好)有没有更pythonic的方法来做到这一点，我想念?

解决方案

你可以试试:

>>>re.sub(r"(\w)([A-Z])", r"\1 \2", "WordWordWord")'字字字'

I've got a file whose format I'm altering via a python script. I have several camel cased strings in this file where I just want to insert a single space before the capital letter - so "WordWordWord" becomes "Word Word Word".

My limited regex experience just stalled out on me - can someone think of a decent regex to do this, or (better yet) is there a more pythonic way to do this that I'm missing?

解决方案

You could try:

>>> re.sub(r"(\w)([A-Z])", r"\1 \2", "WordWordWord")
'Word Word Word'

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