python笔记20181219

render后面跟两种，要买是html文件，要买是字典。

locals()的意思是把变量统一返回。

from django.shortcuts import render,HttpResponse
from demo1 import models
def login(request):
    pass
    return HttpResponse('这是第一次讲django')

def host(request):
    print('host-->>>>>')
    return render(request,'host.html')

def host_list(request):
    print('host_list-->>>>>')
    obj_li=models.Host.objects.all()  #select * from host
    # obj_li  queryset_list
    return render(request,'host.html',{'abc':obj_li,'aaaa':'这是字符串，直接打印'})
    # return render(request,'host.html',locals())
    # locals()-->{'obj_li':obj_li}