Alex Waygood <alex.wayg...@gmail.com> added the comment:
You get the same error if you subclass a frozen dataclass, then try to set an
attribute that is not one of the superclass's __slots__:
```
>>> @dataclass(slots=True, frozen=True)
... class Point:
... x: int
... y: int
...
...
>>> class Subclass(Point): pass
...
>>> s = Subclass(1, 2)
>>> s.z = 5
Traceback (most recent call last):
File "<pyshell#15>", line 1, in <module>
s.z = 5
File "<string>", line 7, in __setattr__
TypeError: super(type, obj): obj must be an instance or subtype of type
```
----------
_______________________________________
Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue45897>
_______________________________________
_______________________________________________
Python-bugs-list mailing list
Unsubscribe:
https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
