获取JSON对象的某个值的索引

import json

def find_value_index(json_obj, target_value):
    if isinstance(json_obj, dict):
        for key, value in json_obj.items():
            if value == target_value:
                return key
            elif isinstance(value, (dict, list)):
                result = find_value_index(value, target_value)
                if result is not None:
                    return key + '.' + result
    elif isinstance(json_obj, list):
        for index, value in enumerate(json_obj):
            if value == target_value:
                return str(index)
            elif isinstance(value, (dict, list)):
                result = find_value_index(value, target_value)
                if result is not None:
                    return str(index) + '.' + result

# 示例JSON对象
json_str = '''
{
  "name": "John",
  "age": 30,
  "city": "New York",
  "pets": [
    {
      "name": "Fluffy",
      "type": "cat"
    },
    {
      "name": "Buddy",
      "type": "dog"
    }
  ]
}
'''

# 解析JSON字符串为JSON对象
json_obj = json.loads(json_str)

# 获取值为"dog"的索引
target_value = "dog"
index = find_value_index(json_obj, target_value)
print(f"The index of '{target_value}' is: {index}")