如何对列表和集合进行成员资格测试？

my_list = [1, 2, 3, 4, 5]

if 3 in my_list:
    print("3 is in the list")
else:
    print("3 is not in the list")

my_set = {1, 2, 3, 4, 5}

if 3 in my_set:
    print("3 is in the set")
else:
    print("3 is not in the set")

my_string = "Hello, world!"

if "world" in my_string:
    print("'world' is in the string")
else:
    print("'world' is not in the string")

my_tuple = (1, 2, 3, 4, 5)

if 3 in my_tuple:
    print("3 is in the tuple")
else:
    print("3 is not in the tuple")