如果循环:"x not in"与"not x in"

# 列表示例
my_list = [1, 2, 3, 4, 5]

# 使用 "x not in"
if 6 not in my_list:
    print("6 is not in the list")

# 使用 "not x in"
if not 6 in my_list:
    print("6 is not in the list")

# 输出结果：6 is not in the list

# 集合示例
my_set = {1, 2, 3, 4, 5}

# 使用 "x not in"
if 6 not in my_set:
    print("6 is not in the set")

# 使用 "not x in"
if not 6 in my_set:
    print("6 is not in the set")

# 输出结果：6 is not in the set