I noticed that the sequence types does not have these methods that the map types has: get(), items(), keys(), values().
It could seem useless to have them for sequences, but I think it will ease the creation of functions and methods that allow you to input a generic iterable as parameter, but needs to use one of these methods in case the parameter is a map. In one word, it will facilitate duck typing. For the same reason, I would suggest the introduction of a new map type, vdict, a dict that by default iterates over values instead over keys. So a vdict object "d" wiil have iter(d) == iter(d.values()), and should also have a count() method, like sequence types. Indeed sequences are, in my humble opinion, a specialized case of maps, when keys are numeric only, are always contiguous without gaps and start from 0. This way we will have a simpler way to let people to use sequences or maps indifferently, and let the code untouched. -- https://mail.python.org/mailman/listinfo/python-list
