Python----循环嵌套列表

# 进阶题目

# 先做后看答案

# 1：给定列表和目标值，从列表找到与目标值匹配的对象并输出

strings = [
    [
        "hello there",
        "how are you",
    ],
    [
        "goodbye world",
        "hello world",
    ]
]
word = "hello"

hello there
hello world

# 2：给定列表和目标值，从子列表中找到包含目标值的子列表，若子列表包含则输出True，反之输出False

strings = [
    [
        "hello there",
        "how are you",
    ],
    [
        "goodbye world",
        "hello world",
    ]
]
word = "goodbye"

False
True

# 3：给定列表和目标值，判断该列表是否包含目标值，包含则输出True，反之输出False

strings = [
    [
        "hello there",
        "how are you",
    ],
    [
        "goodbye