如何在python中遍历json树？

import json

json_data = '{"name": "John", "age": 30, "city": "New York"}'
data = json.loads(json_data)

def traverse_json(data):
    if isinstance(data, dict):
        for key, value in data.items():
            print(key, value)
            traverse_json(value)
    elif isinstance(data, list):
        for item in data:
            traverse_json(item)

import json

def traverse_json(data):
    if isinstance(data, dict):
        for key, value in data.items():
            print(key, value)
            traverse_json(value)
    elif isinstance(data, list):
        for item in data:
            traverse_json(item)

json_data = '''
{
    "name": "John",
    "age": 30,
    "city": "New York",
    "pets": [
        {"name": "Max", "type": "dog"},
        {"name": "Lucy", "type": "cat"}
    ]
}
'''

data = json.loads(json_data)
traverse_json(data)

name John
age 30
city New York
pets [{'name': 'Max', 'type': 'dog'}, {'name': 'Lucy', 'type': 'cat'}]
name Max
type dog
name Lucy
type cat