check if set is a subset of another python

1# Creating sets
2A = {1, 2, 3}
3B = {1, 2, 3, 4, 5}
4
5# Checking if A is subset of B (vice versa)
6# Returns True
7# A is subset of B
8print(A.issubset(B))
9
10# Returns False
11# B is not subset of A
12print(B.issubset(A))

1if(all(x in test_list for x in sub_list)): 
2  flag = True

1A = {1, 2, 3}
2B = {0, 1, 2, 3, 4, 5, 6}