mirrors/cpython
1
0
Fork 0
mirror of https://github.com/python/cpython.git synced 2025-08-03 16:39:00 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 8

allow changing __class__ between a heaptype and non-heaptype in some cases (closes #22986)

Browse source 
Patch by Nathaniel Smith.
This commit is contained in:
Benjamin Peterson 2015-01-30 13:33:42 -05:00
parent 91496a08d4
commit 9d4cbcc86b
3 changed files with 56 additions and 26 deletions
Download patch file Download diff file Expand all files Collapse all files

16
Lib/test/test_descr.py
View file

@ -1026,6 +1026,22 @@ order (MRO) for bases """
self.assertEqual(x.foo, 1)
self.assertEqual(x.__dict__, {'foo': 1})
def test_object_class_assignment_between_heaptypes_and_nonheaptypes(self):
class SubType(types.ModuleType):
a = 1
m = types.ModuleType("m")
self.assertTrue(m.__class__ is types.ModuleType)
self.assertFalse(hasattr(m, "a"))
m.__class__ = SubType
self.assertTrue(m.__class__ is SubType)
self.assertTrue(hasattr(m, "a"))
m.__class__ = types.ModuleType
self.assertTrue(m.__class__ is types.ModuleType)
self.assertFalse(hasattr(m, "a"))
def test_slots(self):
# Testing __slots__...
class C0(object):