> On Dec 13, 2016, at 11:42 AM, Raymond Hettinger <raymond.hettin...@gmail.com> > wrote: > > >> On Dec 13, 2016, at 1:51 AM, Max Moroz <maxmo...@gmail.com> wrote: >> >> Would it be worth ensuring that an exception is ALWAYS raised if a key >> is added to or deleted from a dictionary during iteration? >> <snip> >> I suspect the cost of a more comprehensive error reporting is not >> worth the benefit, but I thought I'd ask anyway. > > I think what we have has proven itself to be good enough to detect the common > cases, and it isn't worth it to have dicts grow an extra field which has to > be checked or updated on every operation. >
I agree that we shouldn't complicate things, but wouldn't PEP 509 be a cheap way to check this? Eric. _______________________________________________ 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
