The indices method of slice doesn't seem to work quite how I would expect when reversing a sequence.
For example : >>> s = '01234' >>> s[::-1] '43210' >>> s[slice(None,None,-1) ] '43210' So a slice with a negative step (and nothing else) reverses the sequence. But what are the corresponding indices? >>> slice(None,None,-1).indices(len(s)) (4, -1, -1) That looks O.K. The start is the last item in the sequence, and the stop is one before the beginning of the sequence. But these indices don't reverse the string: >>> s[4:-1:-1] '' Although they give the correct range: >>> range( 4, -1,-1) [4, 3, 2, 1, 0] It would appear that there is no set of indices that will both reverse the string and produce the correct range! Is this a bug or a feature? GEC See also: http://www.python.org/doc/2.3.5/whatsnew/section-slices.html -- http://mail.python.org/mailman/listinfo/python-list
