如何在Python中删除带或不带空格的空行 [英] How to remove empty lines with or without whitespace in Python

问题描述

我有大字符串，我用换行符分割.如何删除所有空行(仅限空格)?

I have large string which I split by newlines. How can I remove all lines that are empty, (whitespace only)?

伪代码:

for stuff in largestring:
   remove stuff that is blank

推荐答案

使用正则表达式:

if re.match(r'^\s*$', line):
    # line is empty (has only the following: \t\n\r and whitespace)

使用正则表达式 + filter():

Using regex + filter():

filtered = filter(lambda x: not re.match(r'^\s*$', x), original)

如在 codepad 上所见.

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