[rguillebert]

Namedtuples also behave like tuples, which is great when you want to incrementally turn tuples into classes but if you want an easy way of creating classes, it's probably not a good idea to have them behave like tuples. Plus dataclasses have more features.

[pletnes]

There’s also the fact that sometimes you need an actual tuple - in some places (C extensions like numpy, opencv, …) and a dataclass just doesn’t work.