[issue15848] PEP 3121, 384 Refactoring applied to xxsubtype module
STINNER Victor
report at bugs.python.org
Mon Jun 22 05:41:41 EDT 2020
STINNER Victor <vstinner at python.org> added the comment:
The PEP 3121 part is fixed by:
commit d5cacbb1d9c3edc02bf0ba01702e7c06da5bc318
Author: Nick Coghlan <ncoghlan at gmail.com>
Date: Sat May 23 22:24:10 2015 +1000
PEP 489: Multi-phase extension module initialization
Known limitations of the current implementation:
- documentation changes are incomplete
- there's a reference leak I haven't tracked down yet
The leak is most visible by running:
./python -m test -R3:3 test_importlib
However, you can also see it by running:
./python -X showrefcount
Importing the array or _testmultiphase modules, and
then deleting them from both sys.modules and the local
namespace shows significant increases in the total
number of active references each cycle. By contrast,
with _testcapi (which continues to use single-phase
initialisation) the global refcounts stabilise after
a couple of cycles.
----------
nosy: +vstinner
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