On Tue, Nov 12, 2013, at 4:39, Frank-Rene Schäfer wrote: > > All you've done is proven that you can subvert things. By fiddling > > with __hash__, __eq__, and so on, you can make sets and dicts behave > > very oddly. Means nothing. > > To the contrary, it means everything about what 'isimmutable' could > contribute: security against advert or inadvert insertion of mutable > objects.
If an object can lie about its hashability, it can lie to your function too... unless you don't intend to provide a way for a _genuinely_ immutable class to say so. -- https://mail.python.org/mailman/listinfo/python-list
