flask中重定向所涉及的反推：由视图函数反推url

# -*- coding: utf-8 -*-
from  flask import Flask, redirect, url_for

app = Flask(__name__)


@app.route(‘/default‘)
def index():
    return "hello flask"


@app.route("/login")
def login():
    url = url_for("index")
    print(url)
    return redirect(url)


if __name__ == ‘__main__‘:
    # 通过url_map可以查看整个flask中的路由信息
    print(app.url_map)
    # 启动flask程序
    app.run(debug=True)