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Python strip() function introduction, friends who need it can refer to it
Function prototype
Declaration: s is a string, rm is the character sequence to be deleted
s.strip(rm) Delete the characters in the rm deletion sequence at the beginning and end of the s string
s.lstrip(rm) Delete the characters in the rm deletion sequence at the beginning and end of the s string
s.rstrip(rm) Delete the characters in the rm deletion sequence at the end of the s string
Note:
1. When rm is empty, whitespace characters are deleted by default (Including '\n', '\r', '\t', ' ')
For example:
The code is as follows:
>>> a = ' 123' >>> a.strip() '123' >>> a='\t\tabc' 'abc' >>> a = 'sdff\r\n' >>> a.strip() 'sdff'
2. Delete rm here The sequence is deleted as long as the characters on the edge (beginning or end) are within the deletion sequence.
For example:
The code is as follows:
>>> a = '123abc' >>> a.strip('21') '3abc' 结果是一样的 >>> a.strip('12') '3abc'
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