Nathaniel Smith wrote:
I.e., BIN_ADD could doif (Py_REFCNT(left) == 1) result = PyNumber_InPlaceAdd(left, right); else result = PyNumber_Add(left, right) Upside: all packages automagically benefit! Potential downsides to consider: - Subtle but real and user-visible change in Python semantics.
That would be a real worry. Even if such cases were rare, they'd be damnably difficult to debug when they did occur. I think for safety's sake this should only be done if the type concerned opts in somehow, perhaps by a tp_flag indicating that the type is eligible for temporary elision. -- Greg _______________________________________________ Python-Dev mailing list Python-Dev@python.org https://mail.python.org/mailman/listinfo/python-dev Unsubscribe: https://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
