[Python-Dev] correction of a bug

Edward Loper edloper at gradient.cis.upenn.edu
Sun May 14 22:27:50 CEST 2006


draconux wrote:
> 
> Hello all ,
> string.lstrip("source/old_prog","source/") return "ld_prog" instead of 
> "old_prog"

You are misunderstanding what the second argument to lstrip does.  It is 
interpreted as a list of characters; and lstrip will remove the maximal 
prefix of the string that consists of these characters.  E.g.:

 >>> 'aaabbbcccaax'.lstrip('abc')
'x'

The first character in your string that is not one of the characters 
's', 'o', 'u', 'r', 'c', 'e', or '/' is 'l', so it strips all characters 
up to that one.

-Edward


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