Message414822
Related to #46382
A class decorated with dataclass(slots=True) can't pass any parameters to the __init_subclass__ method of its parent class.
from dataclasses import dataclass
class A:
__slots__ = ()
def __init_subclass__(cls, msg):
print(msg)
@dataclass(slots=True)
class B(A, msg="Hello world!"):
pass
File "lib/python3.10/dataclasses.py", line 1145, in _add_slots
cls = type(cls)(cls.__name__, cls.__bases__, cls_dict)
TypeError: A.__init_subclass__() missing 1 required positional argument: 'msg' |
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Date |
User |
Action |
Args |
2022-03-10 00:14:28 | crusaderky | set | recipients:
+ crusaderky |
2022-03-10 00:14:28 | crusaderky | set | messageid: <1646871268.44.0.752243680587.issue46970@roundup.psfhosted.org> |
2022-03-10 00:14:28 | crusaderky | link | issue46970 messages |
2022-03-10 00:14:28 | crusaderky | create | |
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