python - Python 上所有键及其嵌套字典的深度

Question

样本输入:

a = {
"key1": 1,
"key2": {
        "key3": 1,
        "key4": {
                "key5": 4
            }
        }
}

示例输出:

key1 1
key2 1
key3 2
key4 2
key5 3

如何遍历此嵌套字典的每个元素并打印每个单独元素的深度？

Answer 1

使用递归:

def print_depth(d, start=0):
    for key, value in d.items():
        print(key, start + 1)
        if isinstance(value, dict):
            print_depth(value, start=start+1)


a = {
    "key1": 1,
    "key2": {
        "key3": 1,
        "key4": {
            "key5": 4
        }
    }
}

print_depth(a)

输出

key1 1
key2 1
key3 2
key4 2
key5 3