Guido van Rossum <gu...@python.org> added the comment:
I had just come to a different conclusion. Maybe ChainMap should just not grow `|` and `|=` operators? That way there can be no confusion. `dict() | ChainMap()` and `ChainMap() | dict()` will fail because ChainMap doesn't inherit from dict. (Note that in your last message, `d1 |= cm2` will fail for this reason. You can of course fix that with `d1 |= dict(cm2)`, although IIUC there's no reason one of the maps couldn't be some other [Mutable]Mapping.) ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue36144> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
