text: from flask import Flask,request,render_template
  
  app = Flask(__name__)
  @app.route('/',methods = ['GET','POST'])
  def home():
      return render_template('home.html')
  
  @app.route('/signin',methods=['GET'])
  def signin_form():
      return render_template('form.html')
  
  @app.route('/signin',methods=['POST'])
  def signin():
      username = request.form['username']
      password = request.form['password']
      if username == 'admin' and password == 'password':
          return render_template('signin-ok.html',username= username)
      return render_template('form.html',message = 'Bad username or password',username = username)
  
  if __name__ =='__main__':
      app.run()