K12教育赛事综合服务平台
聚乐之家官方网站
下载聚乐之家官方App
专注青少年竞赛题库网站
已知初始代码如下：
user_info = {"username": "xiaoming", "email": "xiaoming@example.com"} # 执行以下操作 user_info["age"] = 22 user_info["email"] = "ming.xiao@example.com" del user_info["username"]
{"username": "xiaoming", "email": "ming.xiao@example.com", "age": 22}
{"email": "ming.xiao@example.com", "age": 22}
{"username": "xiaoming", "email": "xiaoming@example.com", "age": 22}
{"email": "xiaoming@example.com", "age": 22}