returning True, False or None

[Raymond Hettinger]

"Steven Bethard"
> 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?


return max(lst)


Raymond Hettinger