Nathaniel Smith wrote:
I'd be a little nervous about whether anyone has implemented, say, an iadd with side effects such that you can tell whether a copy was made, even if the object being copied is immediately destroyed.
I can think of at least one plausible scenario where this could occur: the operand is a view object that wraps another object, and its __iadd__ method updates that other object. In fact, now that I think about it, exactly this kind of thing happens in numpy when you slice an array! So the opt-in indicator would need to be dynamic, on a per-object basis, rather than a type flag. -- 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
