这样可以么？
# coding=utf-8
s1 = set([1, 2, 3, 4, 5])
s2 = set([1, 2, 3, 4, 5, 6, 7, 8, 9])
if not s1.isdisjoint(s2):
if s1.issubset(s2):
for num in s1:
print(num)
else:
for number in s2:
print(number)
else:
print('无重合')
