Python JSON对象追加

import json

# 假设我们有一个初始的JSON对象（字典）
json_obj = {
    "name": "Alice",
    "age": 30
}

# 追加新的键值对
json_obj["city"] = "New York"
json_obj["hobbies"] = ["reading", "traveling"]

# 将更新后的字典转换回JSON字符串（如果需要）
updated_json_str = json.dumps(json_obj, indent=4)

print(updated_json_str)

{
    "name": "Alice",
    "age": 30,
    "city": "New York",
    "hobbies": [
        "reading",
        "traveling"
    ]
}

try:
    json_obj = json.loads(json_str)
except json.JSONDecodeError as e:
    print(f"JSON解析错误: {e}")

if isinstance(new_value, list):
    json_obj[key] = new_value
else:
    raise ValueError("预期的值类型为列表")