Not a huge fan of an f-prefix for a frozen set (I prefer just recognizing the case and optimizing the byte code, I don't think frozensets are used often enough to justify its own syntax), but I love {,} for an empty set. On Tue, Jan 18, 2022 at 4:13 PM Rob Cliffe via Python-ideas < python-ideas@python.org> wrote:
On 18/01/2022 19:42, MRAB wrote:
On 2022-01-18 18:54, Neil Girdhar wrote:
Even if f{1} creates a frozenset, I don't think f{} should create a frozenset. I think it makes more sense to keep f{1: 2} open for frozendict if it ever makes it in. Also, {} should be consisten with f{} (both should create dicts). If you want an empty frozenset, you would have to do it the same way you do it for sets: either frozenset() or f{*()}.
[snip] An alternative might be to allow {,} for an empty set, which would then let you have f{,} for an empty frozenset. I like it! Rob Cliffe
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