Steven D'Aprano <st...@pearwood.info> writes: > I want to see an actual application where adding a new key to a > mapping is expected to change the other keys.
directory["mary.roommate"] = "bob" directory["mary.address"] = None # unknown address ... directory["bob.address"] = "132 Elm Street" Since Bob and Mary are roommates, they have the same address, so the application might want to update both addresses once it learns one of them. -- https://mail.python.org/mailman/listinfo/python-list
