目录结构：
app.py 主程序文件
static 静态资源文件夹
templates 模板文件夹
html 实例代码
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://cdn.staticfile.org/twitter-bootstrap/4.1.0/css/bootstrap.min.css">
<script src="https://cdn.staticfile.org/jquery/3.2.1/jquery.min.js"></script>
<script src="https://cdn.staticfile.org/popper.js/1.12.5/umd/popper.min.js"></script>
<script src="https://cdn.staticfile.org/twitter-bootstrap/4.1.0/js/bootstrap.min.js"></script>
<title>淘宝优惠购</title>
<meta name="renderer" content="webkit">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1">
<link rel="stylesheet" href="{{url_for('static', filename='layui.css')}}" media="all">
<script src="{{url_for('static', filename='layui.js')}}" charset="utf-8"></script>
<!-- 注意：如果你直接复制所有代码到本地，上述css路径需要改成你本地的 -->
<style>
a:hover{
text-decoration: none;
box-shadow: 0 2px 4px rgba(0,0,0,.1);
}
.shop-item image{
height: 100px;
width: 100px;
}
.site-demo-flow{
height: 100%;
/*width: 1000px;*/
/*border: 2px solid red;*/
display: flex;
flex-direction: row;
flex-wrap: wrap;
justify-content: space-around;
}
.site-demo-flow:hover{
box-shadow: 0 2px 4px #f5f6f7;
}
.shop-item{
box-shadow: 0 4px 4px rgba(0,0,0,.1);
/*border: 2px solid blue;*/
/* width: 0.76rem;*/
/*height: 0.77rem;*/
width: 20%;
height: 600px;
padding: 30px;
margin: 65px;
background: #fff;
}
.hui-price {
vertical-align: middle;
font-size: 30px;
color: #FF0036;
/*font-weight: bolder;*/
font-family: Arial;
-webkit-font-smoothing: antialiased;
}
.yuan-price {
font-size: 18px;
text-decoration: line-through;
font-size: 14px;
}
.title{
padding-bottom: .2em;
line-height: 1;
font-size: 16px;
font-weight: 700;
color: #000;
}
.img-responsive {
display: block;
height: auto;
max-width: 100%;
}
.coupons {
/*border: 2px solid red;*/
text-align: center;
margin: 10px auto;
}
.btn-danger{
margin: 10px auto;
}
</style>
</head>
<body>
<div class="container-fluid">
<div class="site-demo-flow " id="LAY_demo3">
{% for i in list %}
<div class="shop-item">
<a href="{{ i[3] }}" target="_blank">
<img lay-src="{{ i[4] }}" class="img-responsive">
<div class="coupons">
<div class="title">{{ i[0] }}</div>
<div class="yuan-price">原价：{{ i[1] }}</div>
<div class="hui-price">优惠价：{{ i[2] }}</div>
<div class="quan-btn">
<button type="button" class="btn btn-danger">立即领券</button>
</div>
</div>
</a>
</div>
{% endfor %}
</div>
</div>
<!-- 注意：如果你直接复制所有代码到本地，上述js路径需要改成你本地的 -->
<script>
layui.use('flow', function(){
var flow = layui.flow;
//当你执行这样一个方法时，即对页面中的全部带有lay-src的img元素开启了懒加载（当然你也可以指定相关img）
flow.lazyimg();
});
</script>
</body>
</html>
最终效果图：
image.png
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