On Mon, Jul 23, 2018 at 7:24 AM, Paul Moore <p.f.mo...@gmail.com> wrote:
> On 23 July 2018 at 11:31, Jeroen Demeyer <j.deme...@ugent.be> wrote: > > On 2018-07-23 12:24, Jeroen Demeyer wrote: > >> > >> Another solution that nobody has mentioned (as far as I know) is to add > >> additional syntax to the language for that. For example, one could say > >> that (1:3) could be used to construct slice(1, 3) directly. The > >> parentheses are required to avoid confusion with type hints. I'm not a > >> Python language expert, but I don't think that type hints can occur > >> inside parentheses like that. > > > > > > And this could be extended to tuples (1:3, 2:4) and lists [1:3, 2:4] of > > slices too. > > I thought the reason the proposal got nowhere was because it's pretty > simple to define it yourself: > > >>> class SliceHelper: > ... def __getitem__(self, slice): > ... return slice > ... > >>> SH = SliceHelper() > >>> SH[1::3] > slice(1, None, 3) > > Did I miss something significant about why this wasn't sufficient? > > Paul That involves initializing an instance, which doesn't serve any purpose in this case and I was hoping to avoid.
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