17.02.14 13:14, M.-A. Lemburg написав(ла):
Here's a particularly nasty case:
l = [(1, None), (2, None)]
l.sort()
l
[(1, None), (2, None)]
l = [(1, None), (2, None), (3, 4)]
l.sort()
l
[(1, None), (2, None), (3, 4)]
l = [(1, None), (2, None), (3, 4), (2, 3)]
l.sort()
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: unorderable types: int() < NoneType()
If you replace None to another value that cannot be compared with int
(e.g. string), you will got the same nasty case.
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