Session

from flask import Flask, session

app = Flask(__name__)
# 使用session必须要这个
app.secret_key = 'sxfsdgweterwtrxcbdfs'


@app.route('/')
def index():
    # 读取session
    print(session.get('x1'))
    return 'index'


@app.route('/set_session')
def set_session():
    # 设置session
    session['x1'] = 22
    return 'set_session'


if __name__ == '__main__':
    app.run(debug=True, port=80)

流程：

请求刚刚到达

ctx = RequestContext(...)
        - request
        - session=None
ctx.push()
    ctx.session = SecureCookieSessionInterface.open_session

视图函数
请求结束

SecureCookieSessionInterface.save_session()

Flask的Session

Session