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bpo-38006: Avoid closure in weakref.WeakValueDictionary (GH-15641)

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weakref.WeakValueDictionary defines a local remove() function used as
callback for weak references. This function was created with a
closure.  Modify the implementation to avoid the closure.
(cherry picked from commit a2af05a0d3)

Co-authored-by: Victor Stinner <vstinner@redhat.com>
This commit is contained in:
Miss Islington (bot) 2019-09-09 09:24:16 -07:00 • committed by GitHub
parent b6ef8f2beb
commit 78d15faf6c
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3 changed files with 10 additions and 2 deletions
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Lib/test/test_weakref.py
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@ -1785,6 +1785,11 @@ class MappingTestCase(TestBase):
# copying should not result in a crash.
self.check_threaded_weak_dict_copy(weakref.WeakValueDictionary, True)
@support.cpython_only
def test_remove_closure(self):
d = weakref.WeakValueDictionary()
self.assertIsNone(d._remove.__closure__)
from test import mapping_tests