python flask框架+模板引擎实现用户登录鉴权，模拟增删改查

#源码说明

学习flask框架的可以看看，运行以下代码，记得pip list看看你电脑环境有没有预装以下源码import 导入的插件，没有请使用pip install 插件名下载安装

新建一个文件夹，例如python 进入该文件夹，创建demo.py并复制以下python代码放置进去，其次下载文章末尾的附件templates压缩包解压后放置到python文件夹下,后面就可以使用运行python的方式运行demo.py了，若有不懂可以添加久伴博客官方交流群，在文章末尾哦

#python 源码

# 导入flask对象
from flask import Flask, render_template, request, redirect, url_for, session
import functools
# 当前文件名
app = Flask(__name__)

app.secret_key = '3a3a3a3a3a3a3aa3'

DATA_LIST = {
    1: {'name': '测试姓名', 'age': '26'},

}


def auth(func):
    @functools.wraps(func)
    def inner(*args, **kwargs):
        username = session.get('xxx')
        if not username:
            return redirect(url_for('login'))
        return func(*args, **kwargs)
    return inner
# 登录路由


@app.route('/login', methods=['GET', 'POST'])
def login():
    if request.method == "GET":
        return render_template('login.html')
    user = request.form.get('user')
    pwd = request.form.get('pwd')
    if user == 'jiub' and pwd == '123456':
        session['xxx'] = 'jiub'
        return redirect('/index')
    error = '用户名或密码错误'
    return render_template('login.html', error=error)
# 首页路由


@app.route('/index', endpoint='idx')
@auth
def index():

    data_list = DATA_LIST
    return render_template('qqq.html', data_list=data_list)
# 修改路由


@app.route('/edit/', methods=['GET', 'POST'])
@auth
def edit(nid):
    if request.method == "GET":
        info = DATA_LIST[nid]

        return render_template('edit.html', info=info)
    jid = nid
    user = request.form.get('user')
    age = request.form.get('age')
    print(age)
    DATA_LIST[jid]['name'] = user
    DATA_LIST[jid]['age'] = age
    return redirect(url_for('idx'))
# 删除路由


@app.route('/del/')
@auth
def delete(nid):

    del DATA_LIST[nid]
    print(nid)
    return redirect(url_for('idx'))

# 增加路由


@app.route('/add', methods=['GET', "POST"])
@auth
def add():
    if request.method == "GET":
        return render_template('add.html')
    # id = request.form.get('id')
    user = request.form.get('user')
    age = request.form.get('age')
    k = 0
    for k in DATA_LIST:
        id = k+1
    for i in DATA_LIST:
        if i == id:  # 判断接受的id编号是否重复，如果id重复跳转，新增页面
            # print('id重复')
            error = 'ID重复'
            return render_template('add.html', error=error)

    DATA_LIST[id] = {'name': user, 'age': age}
    return redirect('/index')


if __name__ == '__main__':
    app.run(debug=True, host='192.168.40.8', port=80)