Rustom Mody <rustompm...@gmail.com> writes: > Then you are obliged to provide some other way of understanding > object-identity
How about: Every object has an identity, which is unique among all concurrently-existing objects. The ‘is’ operator queries whether two references are referring to objects with the same identity, which implies they are actually referring to the same object. Is that sufficient? > I earlier talked of the macro problems of identity, viz across > machines. Python doesn't make any promises about object identity beyond the current run-time of a single instance of a program. So while the problem you describe is interesting, it isn't relevant when talking about Python object identity. -- \ “When in doubt tell the truth. It will confound your enemies | `\ and astound your friends.” —Mark Twain, _Following the Equator_ | _o__) | Ben Finney -- https://mail.python.org/mailman/listinfo/python-list