New submission from Yahya Abou Imran <yahya-abou-im...@protonmail.com>:
>From python-ideas: https://mail.python.org/pipermail/python-ideas/2017-December/048504.html In python 2.7, ABCs's caches and registries are sets. But in python 3.6 they are WeakSet. In consequence, the output of _dump_registry() is almost useless: >>> from collections import abc >>> abc.Iterator._dump_registry() Class: collections.abc.Iterator Inv.counter: 40 _abc_cache: <_weakrefset.WeakSet object at 0x7f4b58fe2668> _abc_negative_cache: <_weakrefset.WeakSet object at 0x7f4b53283780> _abc_negative_cache_version: 40 _abc_registry: <_weakrefset.WeakSet object at 0x7f4b58fe2630> We could convert them into a regular set before printing: if isinstance(value, WeakSet): value = set(value) The result: >>> abc.Iterator._dump_registry() Class: collections.abc.Iterator Inv.counter: 40 _abc_cache: {<class 'dict_valueiterator'>, <class 'bytearray_iterator'>, <class 'tuple_iterator'>, <class 'dict_itemiterator'>, <class 'dict_keyiterator'>, <class 'str_iterator'>, <class 'zip'>, <class 'set_iterator'>, <class 'list_reverseiterator'>, <class 'range_iterator'>, <class 'longrange_iterator'>, <class 'list_iterator'>, <class 'bytes_iterator'>} _abc_negative_cache: set() _abc_negative_cache_version: 40 _abc_registry: set() ---------- messages: 309321 nosy: yahya-abou-imran priority: normal severity: normal status: open title: Readibility of ABCMeta._dump_registry() type: enhancement versions: Python 3.6, Python 3.7 _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue32473> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
