响应正文为字符串类型，如何将其更改为JSON对象

import json

# 假设响应正文为字符串类型
response_body = '{"name": "John", "age": 30, "city": "New York"}'

# 将字符串类型的响应正文解析为JSON对象
json_object = json.loads(response_body)

# 检查解析结果是否成功
if isinstance(json_object, dict):
    # 访问JSON对象中的数据
    name = json_object['name']
    age = json_object['age']
    city = json_object['city']
    print(f"Name: {name}, Age: {age}, City: {city}")
else:
    print("解析失败")