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Python 全系列/第五阶段:数据库编程/mysql介绍与环境安装 23971楼

<!--页脚开始-->
<div class="footer">
    <div class="wrap">
        <div class="footer-seriver">
            <ul>
                <li>
                    <a href="#">
                    <i class="iconfont">&#xe629;</i>
                        <span>预约维修服务</span>
                    </a>
                </li>
                <li>
                    <a href="#">
                        <i class="iconfont">&#xe60e;</i>
                        <span>7天无理由退货</span>
                    </a>
                </li>
                <li>
                    <a href="#">
                        <i class="iconfont">&#xe606;</i>
                        <span>15天免费换货</span>
                    </a>

                </li>
                <li>
                    <a href="#">
                        <i class="iconfont">&#xe624;</i>
                        <span>满99元包邮</span>
                    </a>

                </li>
                <li>
                    <a href="#">
                        <i class="iconfont">&#xe617;</i>
                        <span>520余家售后网点</span>
                    </a>

                </li>
            </ul>
        </div>
        <div class="footer-link">
            <ul>
                <li>帮助中心</li>
                <li><a href="">账户管理</a></li>
                <li><a href="">购物指南</a></li>
                <li><a href="">订单操作</a></li>
            </ul>
            <ul>
                <li>帮助中心</li>
                <li><a href="">账户管理</a></li>
                <li><a href="">购物指南</a></li>
                <li><a href="">订单操作</a></li>
            </ul>
            <ul>
                <li>帮助中心</li>
                <li><a href="">账户管理</a></li>
                <li><a href="">购物指南</a></li>
                <li><a href="">订单操作</a></li>
            </ul>
            <ul>
                <li>帮助中心</li>
                <li><a href="">账户管理</a></li>
                <li><a href="">购物指南</a></li>
                <li><a href="">订单操作</a></li>
            </ul>
            <ul>
                <li>帮助中心</li>
                <li><a href="">账户管理</a></li>
                <li><a href="">购物指南</a></li>
                <li><a href="">订单操作</a></li>
            </ul>
            <ul>
                <li>帮助中心</li>
                <li><a href="">账户管理</a></li>
                <li><a href="">购物指南</a></li>
                <li><a href="">订单操作</a></li>
            </ul>
            <div class="footer-aside">
                <p class="tel">400-100-5678</p>
                <p class="time">8:00-18:00(仅收市话费</p>
                <a href="#" class="kefu">人工客服</a>
                <div class="follow">
                    关注小米:
                    <img src="image/wb.png" alt=""/>
                    <img src="image/wx.png" alt=""/>
                </div>

            </div>

        </div>
    </div>

</div>

老师我就想问下,在页脚最后右边的最后一排字“关注小米”这点本来我自己想的是用p标签,然后给嵌套两个a标签,然后在在a标签里给两个img

后面看到视频中老师用的div,我就想问下,最后一排为什么要用div上面三排出了有个用的a标签,其他都是用的p标签来写的,为什么最后这一点要用div

WEB前端全系列/第一阶段:HTML5+CSS3模块/CSS3新特性 23974楼
Python 全系列/第一阶段:Python入门/函数和内存分析 23975楼

<!--主体开始-->
<div class="cantent">
    <div class="wrap">
        <!--手机开始-->
        <div class="phone">
            <h3 class="title">手机</h3>
            <div class="phone-box">
                <div class="phone-box-left">
                    <a href="#">
                        <img src="image/cb1bd61ad71c45a4f67f09b075463944.jpeg" alt=""/>
                    </a>
                </div>
                <div class="phone-box-right">
                    <div class="items1">
                        <a href="#">
                            <img src="https://cdn.cnbj1.fds.api.mi-img.com/mi-mall/b3553083a4975325eab6470d94465548.jpg?thumb=1&w=120&h=120" alt=""/>
                            <p class="name2">小米10s</p>
                            <p class="name3">骁龙870 | 对称式双扬立体声</p>
                            <p class="name4">3299元起</p>
                        </a>
                    </div>
                    <div class="items1">
                        <a href="#">
                            <img src="https://cdn.cnbj1.fds.api.mi-img.com/mi-mall/b3553083a4975325eab6470d94465548.jpg?thumb=1&w=120&h=120" alt=""/>
                            <p class="name2">小米10s</p>
                            <p class="name3">骁龙870 | 对称式双扬立体声</p>
                            <p class="name4">3299元起</p>
                        </a>
                    </div>
                    <div class="items1">
                        <a href="#">
                            <img src="https://cdn.cnbj1.fds.api.mi-img.com/mi-mall/b3553083a4975325eab6470d94465548.jpg?thumb=1&w=120&h=120" alt=""/>
                            <p class="name2">小米10s</p>
                            <p class="name3">骁龙870 | 对称式双扬立体声</p>
                            <p class="name4">3299元起</p>
                        </a>
                    </div>
                    <div class="items1">
                        <a href="#">
                            <img src="https://cdn.cnbj1.fds.api.mi-img.com/mi-mall/b3553083a4975325eab6470d94465548.jpg?thumb=1&w=120&h=120" alt=""/>
                            <p class="name2">小米10s</p>
                            <p class="name3">骁龙870 | 对称式双扬立体声</p>
                            <p class="name4">3299元起</p>
                        </a>
                    </div>
                    <div class="items1">
                        <a href="#">
                            <img src="https://cdn.cnbj1.fds.api.mi-img.com/mi-mall/b3553083a4975325eab6470d94465548.jpg?thumb=1&w=120&h=120" alt=""/>
                            <p class="name2">小米10s</p>
                            <p class="name3">骁龙870 | 对称式双扬立体声</p>
                            <p class="name4">3299元起</p>
                        </a>
                    </div>
                    <div class="items1">
                        <a href="#">
                            <img src="https://cdn.cnbj1.fds.api.mi-img.com/mi-mall/b3553083a4975325eab6470d94465548.jpg?thumb=1&w=120&h=120" alt=""/>
                            <p class="name2">小米10s</p>
                            <p class="name3">骁龙870 | 对称式双扬立体声</p>
                            <p class="name4">3299元起</p>
                        </a>
                    </div>
                    <div class="items1">
                        <a href="#">
                            <img src="https://cdn.cnbj1.fds.api.mi-img.com/mi-mall/b3553083a4975325eab6470d94465548.jpg?thumb=1&w=120&h=120" alt=""/>
                            <p class="name2">小米10s</p>
                            <p class="name3">骁龙870 | 对称式双扬立体声</p>
                            <p class="name4">3299元起</p>
                        </a>
                    </div>
                    <div class="items1">
                        <a href="#">
                            <img src="https://cdn.cnbj1.fds.api.mi-img.com/mi-mall/b3553083a4975325eab6470d94465548.jpg?thumb=1&w=120&h=120" alt=""/>
                            <p class="name2">小米10s</p>
                            <p class="name3">骁龙870 | 对称式双扬立体声</p>
                            <p class="name4">3299元起</p>
                        </a>
                    </div>
                </div>
            </div>
            <div class="big-img">
                <a href="#">
                    <img src="https://cdn.cnbj1.fds.api.mi-img.com/mi-mall/41d16e66381cfeda7b6b39ab67678d5e.jpg?thumb=1&w=736&h=72" alt=""/>
                </a>
            </div>
        </div>
        <!--手机结束-->
    </div>
</div>
<!--主体结束-->


css
/*主体开始*/
.cantent{
    width: 100%;
    /*自动找高*/
    overflow: hidden;
    padding: 4px 0 12px;
    background-color: #f5f5f5;
}
.title{
    text-align: left;
    color: #333;
    font-size: 22px;
    font-weight: 200;
    line-height: 58px;
}
.phone-box{
    width: 100%;
    height: 614px;
}
.phone-box-left{
    width: 234px;
    height: 614px;
    float: left;
    transition: all .2s linear;
    box-sizing: border-box;
}
.phone-box-right{
    width: 992px;
    height: 614px;
    /*background-color: deepskyblue;*/
    float: left;


}
.phone-box-left img{
    width: 100%;
    height: 100%;
}
.items1{
    width: 234px;
    height: 282px;
    padding: 20px 0;
    margin: 0 0 14px 14px;
    background-color: #fff;
    float: left;
    transition: all .2s linear;
    /*box-sizing: border-box;*/
}
.items1 img{
    width: 160px;
    height: 160px;
    margin-bottom: 18px; ;
}
.name2{
    width: 214px;
    height: 20px;
    color: #333;
    font-size: 14px;
    line-height: 21px;
    margin: 0 10px 2px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.name3{
    width: 214px;
    height: 18px;
    font-size: 12px;
    color: #b0b0b0;
    margin: 0 10px 10px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.name4{
    width: 214px;
    height: 21px;
    color: #ff6700;
    margin: 0 10px 14px;
    font-size: 14px;
}
.phone-box-left:hover{
    box-shadow: 0 15px 30px rgba(0,0,0,.1);
    transform: translate(0,-2px);
}
.items1:hover{
    box-shadow: 0 15px 30px rgba(0,0,0,.1);
    transform: translate(0,-2px);
}
.big-img{
    width: 100%;
    height: 120px;

 }
.big-img img{
    width: 1226px;
    height: 120px;
    margin: 22px 0;
}

老师 我已经遇见过好几次这种情况了,代码没问题,但就是不显示,去浏览器检索了也有,但就是显示不出来,空白一片,这到底是bug?还是什么问题,求老师解答下!!感谢

WEB前端全系列/第一阶段:HTML5+CSS3模块/CSS3新特性 23976楼
JAVA 全系列/第三阶段:数据库编程/SQL 语言 23977楼
WEB前端全系列/第五阶段:前后端交互/PHP、数据库编程与设计 23979楼
Python 全系列/第五阶段:数据库编程/mysql介绍与环境安装 23980楼

import pymysql

class dbUtil():
    def __init__(self):
        self.connect = pymysql.connect(host='localhost', user='root', passwd='root', db='playmusic', charset='utf8')
        self.cursor = self.connect.cursor()


    def close(self):
        if self.cursor:
            self.close()
        if self.connect:
            self.close()

    def exeDML(self, sql, *args):
        try:
            self.cursor.execute(sql, args)
            count = self.connect.commit()
            return count
        except Exception as e:
            print(e)
            if self.connect:
                self.connect.rollback()
        finally:
            self.close()

    def quryone(self, sql, *args):
        try:
            self.cursor.execute(sql, args)
            return self.cursor.fetchone()
        except Exception as e:
            print(e)
            if self.connect:
                self.connect.close()
        finally:
            self.close()

    def quryall(self, sql, *args):
        try:
            self.cursor.execute(sql, args)
            return self.cursor.fetchall()
        except Exception as e:
            print(e)
            if self.connect:
                self.connect.close()
        finally:
            self.close()

limage.png

老师以上代码会出现这个报错,我网上查了,说是超过最大递归深度,但是我写的另外一个一模一样的代码却可以正常运行,下面的这个代码是可以正常运行的。我检查了很多遍,实在找不出有什么区别

class dbUtil():
    def __init__(self):
        self.connect = pymysql.connect(host='localhost', user='root', passwd='root', db='playmusic', charset='utf8')
        self.cursor = self.connect.cursor()

    def close(self):
        if self.cursor:
            self.cursor.close()
        if self.connect:
            self.connect.close()

    def exeDML(self, sql, *args):
        try:
            self.cursor.execute(sql, args)
            count = self.connect.commit()
            return count
        except Exception as e:
            print(e)
            if self.connect:
                self.connect.rollback()
        finally:
            self.close()

    def quryone(self, sql, *args):
        try:
            self.cursor.execute(sql, args)
            # self.cursor.fetchone()
            return self.cursor.fetchone()
        except Exception as e:
            print(e)
            if self.connect:
                self.connect.close()
        finally:
            self.close()

    def quryall(self, sql, *args):
        try:
            self.cursor.execute(sql, args)
            return self.cursor.fetchall()
        except Exception as e:
            print(e)
            if self.connect:
                self.connect.close()
        finally:
            self.close()


Python 全系列/第五阶段:数据库编程/项目-音乐播放器-旧 23981楼

vue_shop.zip前端

flask_shop_st.zip后端


346047c487461994a61fdd0b4115f8d.png

template中 total = "total"   export default中 在 data中设置为0 页码就没了


Python 全系列/第十阶段:Flask百战电商后台项目/Flask百战电商后台项目 23984楼
Python 全系列/第三阶段:Python 网络与并发编程/网络通信 23985楼

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