I did not look up the implementation of 'all' in cpython, but my tests show that all seems to end when one 'False' is found.
So no, i think this is pretty efficient, as he is passing an iterator not a list to all.

EDIT: Buildin all indeed breaks if it encounters a false, see: 1

Duplicate of https://www.codewars.com/kata/number-of-integer-partitions.
But I like this one better.