Steven D'Aprano wrote: > On Wed, 09 May 2007 21:18:25 -0500, Robert Kern wrote: > >> Actually, the root cause of Peter's specific example is the fact that the >> default implementation of __hash__() and __eq__() rely on identity >> comparisons. >> Two separate invocations of the same script give different objects by >> identity >> and thus the "history of insertions and deletions" is different. > > The history is the same. The objects inserted are the same (by equality).
No, they *were* different by equality (identity being the default implementation equality that was not overridden in either Peter's code nor Alan's). -- Robert Kern "I have come to believe that the whole world is an enigma, a harmless enigma that is made terrible by our own mad attempt to interpret it as though it had an underlying truth." -- Umberto Eco -- http://mail.python.org/mailman/listinfo/python-list
