字典中的字典，如何删除和聚合所有数据

Question

我有下面的字典，想把所有的水果放到一个新的字典中，即输出是

{"Apples":1, "Banana":1, "Pear":1, "Orange":2}.

我一直纠结于 Andy 的字典里有一本我不知道如何处理的字典。

{
    "Martin":{"Apples":1},
    "Andy":{"Dad":{"Banana":1}},
    "Lucy":{"Pear":1,"Orange":2}
}

有什么建议吗

Answer 1

您可以使用 python 的内置 isinstance to check what is the type of your value, and recursive calls 将值处理为平面数据：

data = {
    "Martin":{"Apples":1},
    "Andy":{"Dad":{"Banana":1}},
    "Lucy":{"Pear":1,"Orange":2}
}

fruits = {}
def add_fruits(data):
    for key, value in data.items():
        if isinstance(value, dict):
            # it's a dict go one more level
            add_fruits(value)
        else: # it's a fruit
            fruits[key] += value 
add_fruits(data)
print(fruits)

给出以下内容：

{'Apples': 1, 'Banana': 1, 'Pear': 1, 'Orange': 2}

字典中的字典，如何删除和聚合所有数据

Dictionary in a Dictionary, how to remove and aggregate all the data

python

dictionary