New submission from Peter Ingebretson: PEP 412 shared keys are not created for subclasses in Python 3.3 and 3.4:
>>> import sys >>> class A: ... pass ... >>> class B(A): ... pass ... >>> a, b = A(), B() >>> sys.getsizeof(vars(a)) 96 >>> sys.getsizeof(vars(b)) 288 (Actual sizes depend on platform and configuration). This patch allows subclasses to share keys: >>> import sys >>> class A: ... pass ... >>> class B(A): ... pass ... >>> a, b = A(), B() >>> sys.getsizeof(vars(a)) 96 >>> sys.getsizeof(vars(b)) 96 ---------- components: Interpreter Core files: subclass-keys-pep-412.patch keywords: patch messages: 211302 nosy: pingebretson priority: normal severity: normal status: open title: Support key-sharing dictionaries in subclasses type: resource usage versions: Python 3.5 Added file: http://bugs.python.org/file34096/subclass-keys-pep-412.patch _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue20637> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
