returning True, False or None

[Michael Spencer]

Steven Bethard wrote:
> I have lists containing values that are all either True, False or None, 
> e.g.:
> 
>     [True,  None,  None,  False]
>     [None,  False, False, None ]
>     [False, True,  True,  True ]
>     etc.
> 
> For a given list:
> * If all values are None, the function should return None.
> * If at least one value is True, the function should return True.
> * Otherwise, the function should return False.
> 
> Right now, my code looks like:
> 
>     if True in lst:
>         return True
>     elif False in lst:
>         return False
>     else:
>         return None
> 
> This has a light code smell for me though -- can anyone see a simpler 
> way of writing this?
> 
> STeVe

max(lst)  ;-)

Michael