```python def register_user(username, password): """ Registers a new user. Args: username (str): The username of the new user. password (str): The password of the new user. Raises: ValueError: If the username is already taken. """ Check if the username is already taken if username in users: raise ValueError("Username already taken") Create a new user object user = User(username, password) Add the new user to the list of users users.append(user) ``` J影音a: ```j影音a public void registerUser(String username, String password) { // Check if the username is already taken if (users.containsKey(username)) { throw new IllegalArgumentException("Username already taken"); } // Create a new user object User user = new User(username, password); // Add the new user to the map of users users.put(username, user); } ``` C: ```csharp public void RegisterUser(string username, string password) { // Check if the username is already taken if (users.ContainsKey(username)) { throw new ArgumentException("Username already taken"); } // Create a new user object User user = new User(username, password); // Add the new user to the dictionary of users users.Add(username, user); } ``` PHP: ```php public function registerUser(string $username, string $password) { // Check if the username is already taken if (isset($this->users[$username])) { throw new Exception("Username already taken"); } // Create a new user object $user = new User($username, $password); // Add the new user to the array of users $this->users[$username] = $user; } ```

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获取管理员注册链接 联系学校的负责人或 IT 部门，索取小学管理员注册链接。 步骤 2：填写注册表格 打开注册链接。 填写以下信息： 学校名称 学校地址 学校电话号码 姓名 电子邮件地址 用户名 密码 步骤 3：选择角色 选择“管理员”角色。 步骤 4：填写其他信息 如果需要，提供其他信息，例如： 年级 任教班级 步骤 5：提交注册表 仔细检查所填写的详细信息是否准确。 提交注册表。 步骤 6：激活账户 您将收到一封电子邮件，其中包含激活链接。 单击链接激活您的账户。 步骤 7：登录 使用您的用户名和密码登录小学管理员平台。 提示： 使用强密码并将其保密。 定期更新您的密码。 如果您无法收到激活电子邮件，请联系学校的负责人。