使用python查询mysql数据库的时候,默认查询结果没有返回表字段名称,不方便使用.为了方便使用一般会选择将查询结果加上字段名称以字典组的方式返回查询结果. 实现如下: def dict_fetchall(cursor): "Return all rows from a cursor as a dict" columns = [col[0] for col in cursor.description] return [ dict(zip(columns, row)) for row
本节将详细介绍查询集的API,它建立在下面的模型基础上,与上一节的模型相同: from django.db import models class Blog(models.Model): name = models.CharField(max_length=100) tagline = models.TextField() def __str__(self): # __unicode__ on Python 2 return self.name class Author(models.Model
views: from django.shortcuts import render,redirect from django.shortcuts import HttpResponse # Create your views here. from django.views import View class Home(View): def dispatch(self, request, *args, **kwargs): print('before') result = super(Home,
1. 对于字典,可以有下列用法: {% for row in user_dict.keys %} {% for row in user_dict.values %} {% for row in user_dict.items %} 得到元组 {% for k,row in user_dict.items %} <li>{{k}}-{{row}}</li>{% endfor %} 2. views.py中程序 程序及运行结果: