python - 如何删除尾随换行符？(How can I remove a trailing newline?)

Question

Perl的chomp函数在Python中的等效功能是什么，如果是换行符，它将删除字符串的最后一个字符？

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Answer 1

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

(尝试使用rstrip()方法（请参阅doc Python 2和Python 3 ）)

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

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

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

>>> 'test string 
 


 

'.rstrip()
'test string'

To strip only newlines:

(要只删除换行符：)

>>> 'test string 
 


 

'.rstrip('
')
'test string 
 


 '

There are also the methods lstrip() and strip() :

(还有方法lstrip()和strip() ：)

>>> s = "   

  
  abc   def 

  
  "
>>> s.strip()
'abc   def'
>>> s.lstrip()
'abc   def 

  
  '
>>> s.rstrip()
'   

  
  abc   def'