Bengt Richter wrote: >> > > How about if SLICE byte code interpretation would try to call > obj.__int__() if passed a non-(int,long) obj ? Would that cover your use case? >
I believe that this is pretty much what I'm proposing (except I'm not proposing to use the __int__ method because it is already used as coercion and doing this would allow floats to be used in slices which is a bad thing). The apply_slice and assign_slice functions in ceval.c are called for the SLICE and STORE_SLICE and DELETE_SLICE opcodes. > BTW the slice type happily accepts anything for start:stop:step I believe, > and something[slice(whatever)] will call something.__getitem__ with the slice > instance, though this is neither a fast nor nicely spelled way to customize. > Yes, the slice object itself takes whatever you want. However, Python special-cases what happens for X[a:b] *if* X as the sequence-protocol defined. This is the code-path I'm trying to enhance. -Travis _______________________________________________ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
