（技术）Python 3 使用Flask Web框架实现简单的Web应用

通过Flask，实现一个静态的小Web应用

from flask import Flask
from flask import request

app = Flask(__name__)

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

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

@app.route('/signin',methods=['POST'])
def signin():
    # 获取表单的数据，判断逻辑
    if request.form['username'] == 'admin' and request.form['password'] == 'password':
        return '<h3>Hello,admin</h3>'
    return '<h3>Wrong Username or Password!!!</h3>'

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