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gh-74929: PEP 667 C API documentation (gh-119379)

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* Add docs for new APIs
* Add soft-deprecation notices
* Add What's New porting entries
* Update comments referencing `PyFrame_LocalsToFast()` to mention the proxy instead
* Other related cleanups found when looking for refs to the deprecated APIs
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Alyssa Coghlan 2024-06-01 13:59:35 +10:00 • committed by GitHub
parent cc5cd4d93e
commit 3859e09e3d
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9 changed files with 104 additions and 11 deletions
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13
Lib/test/test_sys.py
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@ -394,10 +394,15 @@ class SysModuleTest(unittest.TestCase):
@test.support.refcount_test
def test_refcount(self):
# n here must be a global in order for this test to pass while
# tracing with a python function. Tracing calls PyFrame_FastToLocals
# which will add a copy of any locals to the frame object, causing
# the reference count to increase by 2 instead of 1.
# n here originally had to be a global in order for this test to pass
# while tracing with a python function. Tracing used to call
# PyFrame_FastToLocals, which would add a copy of any locals to the
# frame object, causing the ref count to increase by 2 instead of 1.
# While that no longer happens (due to PEP 667), this test case retains
# its original global-based implementation
# PEP 683's immortal objects also made this point moot, since the
# refcount for None doesn't change anyway. Maybe this test should be
# using a different constant value? (e.g. an integer)
global n
self.assertRaises(TypeError, sys.getrefcount)
c = sys.getrefcount(None)