On 2015-11-25, Ben Finney <ben+pyt...@benfinney.id.au> wrote: > That is, the ‘2’ in ‘cartesian_point = (2, 3)’ means something different > than in ‘cartesian_point = (3, 2)’. > > Whereas the ‘2’ in ‘test_scores = [2, 3]’ means exactly the same as in > ‘test_scores = [3, 2]’. > > If each position in the sequence gives the value there a different > menaning, use a tuple; if not, use a list.
I don't think that's really right. The absence of first-class multisets in python does mean that lists get "abused" for that purpose, but I don't think that means that there's no legitimate use-case for a list (i.e. a mutable sequence in which position is significant). The difference between a tuple and a list is that one is mutable and the other is not. The difference you are describing is between a list and a multiset (or a tuple and an immutable multiset). -- https://mail.python.org/mailman/listinfo/python-list
