python注册2

@app.route('/register',methods=['POST','GET'])
def register():
    if request.method == 'POST':

        # 拿到用户输入的账户、密码、邮箱
        username = request.values.get('username')  
        password = request.values.get('password')
        email = request.values.get('email')

        # 将数据写入文件
        with open('password.txt','a',encoding='utf8') as p:
            p.write('n' + username + ',' + password + ',' + email)
        return "注册成功！ 返回登陆"

    if request.method == 'GET':
        return "返回登录"