Flask登录为Flask提供用户会话管理。它处理登录、注销和长时间记住用户会话的常见任务。
Flask登录不绑定到任何特定的数据库系统或权限模型。唯一的要求是您的用户对象实现几个方法，并且您提供对扩展的回调，该扩展能够从用户ID加载用户。
Flask-Login
Tests coverage Software License
Flask-Login provides user session management for Flask. It handles the common tasks of logging in, logging out, and remembering your users' sessions over extended periods of time.
Flask-Login is not bound to any particular database system or permissions model. The only requirement is that your user objects implement a few methods,
