# -*- coding:utf-8 -*-
from flask import Flask
from flask import request

app = Flask(__name__)

@app.route('/', methods=['GET','POST'])
def home():
    return '<h1>Home</h1>'

@app.route('/signin', methods=['GET'])
def signin_form():
    return '''<form action="/signin" method="post">
            <p>name<input name="username"><p>
            <p>password<input name="password" type="password"></p>
            <p><button type="submit"></p>
            </form>'''

@app.route('/signin', methods=['POST'])
def signin():
    #读取表单内容：
    if request.form['username']=='admin' and request.form['password'] == 'admin':
        return '<h3>Hello, admin!</h3>'
    return '<h3>Bad username or password.</h3>'

if __name__=='__main__':
    app.run()