In the light of Antoine's and Stephan's feedback I think this can be reconsidered -- while I want to take a cautious stance about resource consumption I don't want to stand in the way of progress.
On Thu, Dec 14, 2017 at 4:36 PM, Stephan Hoyer <sho...@gmail.com> wrote: > On Thu, Dec 14, 2017 at 4:29 PM Yury Selivanov <yselivanov...@gmail.com> > wrote: > >> On Thu, Dec 14, 2017 at 7:03 PM, Guido van Rossum <gu...@python.org> >> wrote: >> My motivation to add the slot wasn't the performance: it's just not >> possible to have a class-level __getitem__ on types defined in C. The >> only way is to define a base class in C and then extend it in >> pure-Python. This isn't too hard usually, though. > > > This could potentially make it much more complicated to adding typing > support to NumPy. numpy.ndarray is defined in C. > > -- --Guido van Rossum (python.org/~guido)
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