[Python-ideas] Re: Generic NamedTuples

Ben Avrahami wrote 9 Feb 2021, 03:30:

That's the current alternative, but namedtuples (unlike dataclasses) are slotted, which makes them more space-efficient and (slightly) faster.

When I use @dataclass(frozen=True), I manually add a __slots__ attribute. I presume this makes the resulting objects similar in size to NamedTuples, but I haven't done any measurements (and not sure how to measure this anyway). I wonder: is it possible for @dataclass to have an option slots=True? And perhaps frozen=True should imply slots=True (would this cause any backwards compatibility problems?).