filter.html 在templates 文件夹下
<!-- 列表操作 --> {{ [1,2,3,4,5,6] | first }} <br> {{ [1,2,3,4,5,6] | last }} <br> {{ [1,2,3,4,5,6] | length }} <br> {{ [1,2,3,4,5,6] | sum }} <br> {{ [1,3,2,5,4,6] | sort }} <br> <br/> my_array 原内容：{{ my_array }} <br/> my_array 反转：{{ my_array | lireverse }}
from flask import Flask,request, jsonify, redirect, url_for,abort,make_response,session,render_template app = Flask(__name__) @app.route('/index') def index(): my_array =[1,3,45,3536,575] return render_template('filter.html', my_array =my_array) #自定义filter def do_listrever(li): #通过源列表创建一个新列表 tmp_li = list(li) tmp_li.reverse() return tmp_li app.add_template_filter(do_listrever,'lireverse') if __name__ == '__main__': app.run(debug=True)
day1.html在templates文件夹下
{% if comments | length >10 %} There are {{ comments |length }} {% else %} {# <a href="filter.html">个</a>#} <a href="https://www.baidu.com">wegr</a><!--链接跳转--> {% endif %} <br> {% for i in post %} {{ post.title }}<br> {{ post.text| safe }}<br> <!-- {{ post.age }}<br>--> {% endfor %} {% for it in my_list if it.id!=5 %} {% if loop.index ==1 %} <li style="background-color: orange">{{ it.value }}</li> {% elif loop.index ==2 %} <li style="background-color: green">{{ it.value }}</li> {% elif loop.index ==3 %} <li style="background-color: red">{{ it.value }}</li> {% endif %} {% endfor %}
from flask import Flask,request, jsonify, redirect, url_for,abort,make_response,session,render_template app = Flask(__name__) @app.route('/demo1') def demo1(): comments = [1,2,3,4,5,3] post ={ 'title':'Python', 'age':'1999', 'text':'cltt' } my_list =[ { 'id': 1, 'value': 'happy' }, { 'id': 2, 'value': 'birthday' }, { 'id': 3, 'value': 'to' } ] return render_template('day1.html', comments = comments, post = post, my_list = my_list) if __name__ == '__main__': app.run(debug=True)
点击wegr会跳转到百度界面