NamedTuple serialization fails to work #1164
Description
MRE:
import attrs
from typing import NamedTuple
class MyNamedTuple(NamedTuple):
one: str
two: int
@attrs.define
class MyAttrsClass:
inner: MyNamedTuple
print(attrs.asdict(MyAttrsClass(MyNamedTuple("Hello!", 0))))Expected output:
{'inner': MyNamedTuple(one='Hello!', two=0)}
or at least even a
{'inner': ('Hello!', 0)}
Instead we get
File ~/.local/pipx/venvs/jupyter/lib/python3.11/site-packages/attr/_funcs.py:75, in asdict(inst, recurse, filter, dict_factory, retain_collection_types, value_serializer)
73 elif isinstance(v, (tuple, list, set, frozenset)):
74 cf = v.__class__ if retain_collection_types is True else list
---> 75 rv[a.name] = cf(
76 [
77 _asdict_anything(
78 i,
79 is_key=False,
80 filter=filter,
81 dict_factory=dict_factory,
82 retain_collection_types=retain_collection_types,
83 value_serializer=value_serializer,
84 )
85 for i in v
86 ]
87 )
88 elif isinstance(v, dict):
89 df = dict_factory
TypeError: MyNamedTuple.__new__() missing 1 required positional argument: 'two'
Python: 3.11.0
Attrs: 23.1.0