diff options
| -rw-r--r-- | Lib/abc.py | 4 | ||||
| -rw-r--r-- | Lib/test/test_abc.py | 12 | ||||
| -rw-r--r-- | Misc/NEWS | 3 |
3 files changed, 17 insertions, 2 deletions
@@ -129,8 +129,8 @@ class ABCMeta(type): # external code. _abc_invalidation_counter = 0 - def __new__(mcls, name, bases, namespace): - cls = super().__new__(mcls, name, bases, namespace) + def __new__(mcls, name, bases, namespace, **kwargs): + cls = super().__new__(mcls, name, bases, namespace, **kwargs) # Compute set of abstract method names abstracts = {name for name, value in namespace.items() diff --git a/Lib/test/test_abc.py b/Lib/test/test_abc.py index e1765f0..4bc8382 100644 --- a/Lib/test/test_abc.py +++ b/Lib/test/test_abc.py @@ -404,5 +404,17 @@ class TestABC(unittest.TestCase): self.assertEqual(B.counter, 1) +class TestABCWithInitSubclass(unittest.TestCase): + def test_works_with_init_subclass(self): + saved_kwargs = {} + class ReceivesClassKwargs: + def __init_subclass__(cls, **kwargs): + super().__init_subclass__() + saved_kwargs.update(kwargs) + class Receiver(ReceivesClassKwargs, abc.ABC, x=1, y=2, z=3): + pass + self.assertEqual(saved_kwargs, dict(x=1, y=2, z=3)) + + if __name__ == "__main__": unittest.main() @@ -761,6 +761,9 @@ Library - Issue #24142: Reading a corrupt config file left configparser in an invalid state. Original patch by Florian Höch. +- Issue #29581: ABCMeta.__new__ now accepts **kwargs, allowing abstract base + classes to use keyword parameters in __init_subclass__. Patch by Nate Soares. + Windows ------- |