[Python] Sort list while pushing None values to the end

I have a homogeneous list of objects with None, but it can contain any type of values. Example:

>>> l = [1, 3, 2, 5, 4, None, 7]
>>> sorted(l)
[None, 1, 2, 3, 4, 5, 7]
>>> sorted(l, reverse=True)
[7, 5, 4, 3, 2, 1, None]


Is there a way without reinventing the wheel to get the list sorted the usual python way, but with None values at the end of the list, like that:

[1, 2, 3, 4, 5, 7, None]


I feel like here can be some trick with "key" parameter

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