Scott David Daniels wrote:
> if sys.version_info < (2, 4):
> def sorted(iterable, cmp=None, key=None, reverse=False):
> "return a sorted copy of its input"
> seq = list(iterable)
> if reverse:
> seq.reverse() # preserve stability
> if key is not None:
> seq = [(key(elem), i, elem) for i, elem
> in enumerate(seq)]
> seq.sort(cmp)
> if key is not None:
> seq = [elem for (key, i, elem) in seq]
> if reverse:
> seq.reverse()
> return seq
I think you may have some unintended indentation on the 'seq.sort' line
otherwise this only sorts when a key is specified.
Also, you probably want:
if key is not None:
if reverse:
seq = [(key(elem), -i, elem) for i, elem
in enumerate(seq)]
else:
seq = [(key(elem), i, elem) for i, elem
in enumerate(seq)]
to handle the case where both key and reverse are given.
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