sure but IIRC the performance characteristics of manipulating python tuples ultimately way worse if you need to change the contents of the list, by say, prepend

sure but IIRC the performance characteristics of manipulating python tuples ultimately way worse if you need to change the contents of the list, by say, prepending, or trimming, or whatever. This is no fun in python: def f(some_tuple): part_one = take_the_last_three_parts_of_the_tuple(some_tuple) part_two = append_to_self(part_one) part_three = tail(part_two) etc.