### Python实现密码锁的代码示例 下面提供了一个完整的Python密码锁程序示例，该程序允许用户输入预设的密码来解锁屏幕。如果密码错误，则会提示重新输入。 #### 预设密码验证功能 此代码实现了基本的密码锁机制，其中包含一个循环结构，用于不断请求用户输入直到匹配正确的密码为止。 ```python def password_lock(): # 设定密码 correct_password = "123456" # 这里可以替换为你想要的任何复杂度更高的字符串 while True: user_input = input("请输入密码以解锁 (输入 'exit' 取消操作): ") if user_input == "exit": print("已取消解锁尝试.") break elif user_input == correct_password: print("密码正确! 屏幕已解锁.[^1]") break else: print("密码错误, 请重试...") password_lock() ``` 这段代码定义了一个函数 `password_lock()` ，它包含了整个逻辑流程。首先设置了默认密码 `"123456"` 。接着进入无限循环模式下询问用户的输入。当用户提供正确的密码时，显示成功消息并退出循环；反之则给出失败反馈继续请求新输入直至满足条件或者手动终止进程。 #### 自动化锁屏与解锁扩展功能 对于更高级别的应用需求比如定时自动锁定及解除锁定计算机桌面等情况，可利用第三方库如PyAutoGUI配合操作系统特定命令完成相应动作： ```python import pyautogui import getpass from time import sleep def secure_lock_unlock(password): attempts = 0 max_attempts = 3 while attempts < max_attempts: entered_pwd = getpass.getpass(prompt="Enter your password to unlock the system: ") if entered_pwd == password: print("Access Granted!") return True else: attempts += 1 remaining_tries = max_attempts - attempts if remaining_tries > 0: print(f"Incorrect Password. You have {remaining_tries} attempt(s) left.") print("Too many failed attempts. System locked permanently unless reset manually.") return False if __name__ == "__main__": set_password = "securepwd" try: result = secure_lock_unlock(set_password) if not result: # Simulate locking screen after too many failures. pyautogui.hotkey('winleft', 'm') exit() except Exception as e: print(e) # Additional functionality could include scheduling this script via cron jobs or Task Scheduler on Windows systems so that it runs periodically without requiring constant supervision from users themselves once configured properly beforehand according specific needs such as daily working hours only etc... ``` 上述脚本增加了安全性措施——限制最大登录次数，并引入了隐藏字符回显处理 (`getpass`) 来增强用户体验的同时也提高了保密等级。另外还展示了如何调用Windows快捷方式组合键(`Win+M`)模拟最小化所有窗口效果作为简单形式上的“加锁”。 --- ###