Python: See if one set contains another entirely?

Question

Is there a fast way to check if one set entirely contains another?

Something like:

>>>[1, 2, 3].containsAll([2, 1])
True

>>>[1, 2,         


        

Answer 1

If you suspect a set to be a subset of another, and intersect those two sets together, the result is equal to itself if it is a subset.

a = [2,1,3,3]
b = [5,4,3,2,1]
set(a).intersection(set(b)) == set(a)
>>True