Am 23.01.2011 22:05, schrieb CM:
> In Python, is there a recommended way to write conditionals of the
> form:
>
> "if A and B but not C or D in my list, do something." ?
>
> I may also have variations on this, like "if A but not B, C, or D".
>
> Do I have to just write out all the if and elifs with all possible
> conditions, or is there a handier and more code-maintainable way to
> deal with this?
It's easier and faster if you convert the lists to sets first:
your_set = set(your_list)
if your_set.issuperset(set([A, B])) and your_set.isdisjoint(set([C, D])):
...
Christian
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