[Python-Dev] Negative slice steps considered unhealthy (extended slicing for lists)

[Fredrik Lundh]

greg wrote:

> I think there are some big conceptual problems with allowing
> negative steps in a slice.

wasn't "slices" supposed to work the same way as "ranges"?

from PEP-204:

    "Extended slices do show, however, that there is already a
    perfectly valid and applicable syntax to denote ranges in a way
    that solve all of the earlier stated disadvantages of the use of
    the range() function"

> In the face of such confusion, the only Pythonic thing would
> seem to be to disallow these things.

...and kill PEP-204 at the same time.

</F>