[Python-Dev] Re: d = {}; d[0:1] = 1; d[0:1] = 2; print d[:]

[Guido van Rossum]

> >>>>> "RT" == Robin Thomas <robin.thomas at starmedia.net> writes:
> 
>   RT> Using Python 2.0 on Win32. Am I the only person to be depressed
>   RT> by the following behavior now that __getitem__ does the work of
>   RT> __getslice__?

Jeremy:
> You may the only person to have tried it :-).
> 
>   RT> Python 2.0 (#8, Oct 16 2000, 17:27:58) [MSC 32 bit (Intel)] on win32
>   >>> d = {}
>   >>> d[0:1] = 1
>   >>> d
>   {slice(0, 1, None): 1}
> 
> I think this should raise a TypeError (as you suggested later).

Me too, but it's such an unusual corner-case that I can't worry about
it too much.  The problem has to do with being backwards compatible --
we couldn't add the 3rd argument to the slice API that we wanted.

--Guido van Rossum (home page: http://www.python.org/~guido/)