views.py

from django.shortcuts import render,HttpResponse # Create your views here. def index(request):     age = 1     return render(request,'index.html',{'age':age})

index.html

       
                
我是首页
     {
  { age }}     {#在页面中判断    #}     {% if age > 18 %}         
已经成年了
         {% elif age < 18 %}         
还没有成年
         {% else %}         
正好成年
     {% endif %}  

urls.py

from django.conf.urls import url from django.contrib import admin from app01 import views urlpatterns = [     url(r'^admin/', admin.site.urls),     url(r'index/', views.index) ]