解析json并根据值返回一个键列表

import json

def find_keys_by_value(json_data, target_value):
    keys = []
    
    def search(obj, target):
        if isinstance(obj, dict):
            for key, value in obj.items():
                if value == target:
                    keys.append(key)
                elif isinstance(value, (dict, list)):
                    search(value, target)
        elif isinstance(obj, list):
            for item in obj:
                search(item, target)
    
    data = json.loads(json_data)
    search(data, target_value)
    
    return keys

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

# 查找值为"dog"的键列表
keys = find_keys_by_value(json_data, "dog")
print(keys)