[Guido van Rossum] > __len__ is for sequences and mappings specifically -- everything that > supports __getitem__ should have __len__ and everything that has > __len__ should have __getitem__.
That's going a bit far. Unordered collections (like sets and bags) are a good counter-example. Raymond _______________________________________________ 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
