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                # 87 Flask操作session * 設置session:設置session在session對象上進行設置的,通過"flask.session"對象上的一個"session.setdefault\(\)"方法或者字典來進行設置session信息 ```text # one session.setdefault("name","angle") # two session["name"] = "angle" ``` * 獲取session:通過"session.get\(\)"方法獲取 ```text name = session.get("name") ``` * 刪除指定session:通過“session.pop\(\)”方法刪除指定的session值 ```text # 刪除指定session session.pop("name") ``` * 清除所有的session值 ```text # 清除所有session session.clear() ``` * 設置session有效期:通過配置config進行這是,默認有效期為31天 ```text from datetime import timedelta # 設置會話有效期時間:兩個小時以后會話有效期時間過期 app.config['PERMANENT_SESSION_LIFETIME'] = timedelta(hours=2) # 設置session的過期時間,permanent:持久性,默認時間為一個月 session.permanent = True ``` * 注意,使用session需要配置SECRET\_KEY ```text import os ... # os.unrandom(n):產生24位的隨機數 app.config["SECRET_KEY"] = os.urandom(24) ```
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