python demo

from flask import Flask from flask import render_template, redirect,url_for from flask import request import psycopg2 username=None app = Flask(__name__) @app.route('/') def wel(): #redirect('/login', 'cate_id=2&status=1', 1, '页面跳转中...') return redirect('/login') #return render_template('login.html') @app.route('/login') def login_page(): return render_template('login.html') @app.route