On Mon, Jul 23, 2018 at 7:24 AM, Paul Moore <p.f.moore@gmail.com> wrote:
On 23 July 2018 at 11:31, Jeroen Demeyer <J.Demeyer@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?


That involves initializing an instance, which doesn't serve any purpose in this case and I was hoping to avoid.