[Python-Dev] Python-versus-CPython question for __mul__ dispatch
ncoghlan at gmail.com
Sat May 16 10:16:37 CEST 2015
On 15 May 2015 at 16:53, Nathaniel Smith <njs at pobox.com> wrote:
> On Thu, May 14, 2015 at 9:29 PM, Guido van Rossum <guido at python.org> wrote:
>> I expect you can make something that behaves like list by defining __mul__
>> and __rmul__ and returning NotImplemented.
> Hmm, it's fairly tricky, and part of the trick is that you can never
> return NotImplemented (because you have to pretty much take over and
> entirely replace the normal dispatch rules inside __mul__ and
> __rmul__), but see attached for something I think should work.
> So I guess this is just how Python's list, tuple, etc. work, and PyPy
> and friends need to match...
No, CPython is broken.
Nick Coghlan | ncoghlan at gmail.com | Brisbane, Australia
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