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bpo-30463: Add an empty __slots__ to abc.ABC.

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This commit is contained in:
Aaron Hall, MBA 2017-06-06 15:34:57 -04:00 committed by Serhiy Storchaka
parent ec19ba210b
commit ff48739ed0
3 changed files with 7 additions and 1 deletions
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2
Lib/abc.py
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@ -235,7 +235,7 @@ class ABC(metaclass=ABCMeta):
"""Helper class that provides a standard way to create an ABC using
inheritance.
"""
pass
__slots__ = ()
def get_cache_token():

3
Lib/test/test_abc.py
View File

@ -402,6 +402,9 @@ class TestABC(unittest.TestCase):
C()
self.assertEqual(B.counter, 1)
def test_ABC_has___slots__(self):
self.assertTrue(hasattr(abc.ABC, '__slots__'))
class TestABCWithInitSubclass(unittest.TestCase):
def test_works_with_init_subclass(self):

3
Misc/NEWS
View File

@ -345,6 +345,9 @@ Extension Modules
Library
-------
- bpo-30463: Addded empty __slots__ to abc.ABC. This allows subclassers
to deny __dict__ and __weakref__ creation. Patch by Aaron Hall.
- bpo-30520: Loggers are now pickleable.
- bpo-30557: faulthandler now correctly filters and displays exception codes