On Mon, Jul 13, 2015 at 10:56 AM, Roel Schroeven <r...@roelschroeven.net> wrote: > Hi, > > Quick question: why does str have both index() and find(), while list only > has index()? Is there a reason for that, or is it just an historical > accident?
Historical accident, I think. If it were to be redone, I doubt that str.find would exist. The problem with it is that it returns -1 to indicate that the argument was not found, but -1 is a valid index into the string. This is a potential source of hard-to-find bugs. There was a long thread from 2005 on python-dev proposing to remove str.find in Python 3, but evidently it didn't make the cut: https://mail.python.org/pipermail/python-dev/2005-August/055704.html -- https://mail.python.org/mailman/listinfo/python-list
