It's worth nothing that OrderedDict already supports reversed(). The argument could go both ways:
1. dict is similar to OrderedDict nowadays, so it should support reversed() too; 2. you can use OrderedDict to signal explicitly that you care about ordering; no need to add anything to dict. Regards Antoine. On Thu, 24 May 2018 14:55:32 +0200 Rémi Lapeyre <remi.lape...@vint.fr> wrote: > > Hi, > > since dict keys are sorted by their insertion order since Python 3.6 and that > it’s part of Python specs since 3.7 a proposal has been made in bpo-33462 to > add the __reversed__ method to dict and dict views. > > Concerns have been raised in the comments that this feature may add too much > bloat in the core interpreter and be harmful for other Python implementations. > > Given the different issues this change creates, I see three possibilities: > > 1. Accept the proposal has it is for dict and dict views, this would add about > 300 lines and three new types in dictobject.c > > 2. Accept the proposal only for dict, this would add about 80 lines and one > new type in dictobject.c while still being useful for some use cases > > 3. Drop the proposal as the whole, while having some use, reversed(dict(a=1, > b=2)) > may not be very common and could be done using OrderedDict instead. > > What’s your stance on the issue ? > > Best regards, > Rémi Lapeyre > _______________________________________________ > 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/python-python-dev%40m.gmane.org _______________________________________________ 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
