Jan. 22, 2021
1:35 a.m.
On Fri, Jan 22, 2021 at 11:48 AM Neil Girdhar <mistersheik@gmail.com> wrote:
If enumerate(some_sequence) returns a sequence view, iterating over that sequence view does not advance it—just like how DictViews are not altered by iteration. Same thing if reversed(some_sequence) returns a sequence view.
Then that's backward incompatible with current behaviour, and cannot be done just as "it's a sequence so return a sequence view". Hence the suggestion of a parameter to control this - or, my preferred way: a "seqview" module from which you can import a sequence-view-only version of various iterator functions. ChrisA