可以使用in关键字来判断一个元素是否存在于set中,例如:
my_set = {1, 2, 3, 4, 5} if 3 in my_set: print("3 exists in the set") else: print("3 does not exist in the set")
输出结果为:
3 exists in the set
另外,还可以使用set的.contains()方法来判断元素是否存在,例如:
my_set = {1, 2, 3, 4, 5} if my_set.contains(3): print("3 exists in the set") else: print("3 does not exist in the set")
输出结果同样为:
3 exists in the set