如何删除尾随换行符? [英] How can I remove a trailing newline?

问题描述

Perl的chomp函数与Python等效吗?如果是换行符，它将删除字符串的最后一个字符?

What is the Python equivalent of Perl's chomp function, which removes the last character of a string if it is a newline?

推荐答案

尝试方法rstrip()(请参阅doc Python 3 )

Try the method rstrip() (see doc Python 2 and Python 3)

>>> 'test string\n'.rstrip()
'test string'

Python的rstrip()方法默认情况下会剥离所有种尾随空格，而不仅仅是Perl使用

Python's rstrip() method strips all kinds of trailing whitespace by default, not just one newline as Perl does with chomp.

>>> 'test string \n \r\n\n\r \n\n'.rstrip()
'test string'

仅去除换行符:

>>> 'test string \n \r\n\n\r \n\n'.rstrip('\n')
'test string \n \r\n\n\r '

还有方法lstrip()和strip():

>>> s = "   \n\r\n  \n  abc   def \n\r\n  \n  "
>>> s.strip()
'abc   def'
>>> s.lstrip()
'abc   def \n\r\n  \n  '
>>> s.rstrip()
'   \n\r\n  \n  abc   def'

这篇关于如何删除尾随换行符?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！