#coding=utf-8
from flask import Flask
from flask import request
from flask import redirect
from flask import url_for
from flask import render_template
from flask import session
app = Flask(__name__)
@app.route("/home")
def hello_world():
return "hello world"
@app.route("/user", methods=["GET", "POST"])
def check_user():
if request.method == "POST":
username = request.form.get("username")
session["user"] = username
return redirect(url_for("hello_world"))
elif request.method == "GET":
if "user" in session:
return redirect(url_for("hello_world"))
return "Please register first!"
app.secret_key = "YouWillNeverGuessWhatIThink"
if __name__ == '__main__':
app.run(debug=True)
