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I think if I understand correctly, a <> b is the exact same thing functionally as a != b, and in Python not a == b, but is there reason to use <> over the other versions? I know a common mistake for Python newcomers is to think that not a is b is the same as a != b or not a == b.
<>, or is it exactly the same functionally?
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It means not equal to. It was taken from ABC (python's predecessor) see here: x < y, x <= y, x >= y, x > y, x = y, x <> y, 0 <= d < 10. Order tests ( <> means 'not equals')
The != operator compares the value or equality of two objects, whereas the Python is not operator checks whether two variables point to the same object in memory.
<> in Python 2 is an exact synonym for != -- no reason to use it, no disadvantages either except the gratuitous heterogeneity (a style issue). It's been long discouraged, and has now been removed in Python 3.
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