如何从值中获取字典中的所有键？

Question

我有一个像这样的格式的字典

d = {
    "Fruit_1" : ["mango", "apple"],
    "Fruit_2" : ["apple"],
    "Fruit_3" : ["mango", "banana", "apple", "kiwi", "orange"]
}

我传递一个值为"芒果",我想得到所有相应的键,只有芒果出现.我无法在有价值的地方获得相应的密钥.

Answer 1

迭代d.items并检查mango值的存在.

In [21]: [key for key,value in d.items() if 'mango' in value]
Out[21]: ['Fruit_1', 'Fruit_3']