Django安装与基础命令

通过一个helloworld来了解django在虚拟环境中的安装与运行

1.在python3下面建一个文件夹，最好以venv命名

python3 -m venv django_venv

如果出错:请使用下面的命令创建虚拟环境

pip install virtualenvvirtualenv env_name --python=python3

2.激活虚拟环境

ubunto下操作：

source env_name /bin/activate //激活环境

windows下操作:

(cmd) cd env_name/Scripts

activete

3.安装Django 1.11

pip install django==1.11

4.建项目

django-admin startproject  helloworld

5.运行

cd helloworld
python manage.py runserver  
(默认端口8000)
# 指定端口
python manage.py runserver 0.0.0.0:8888
#  sudo ufw allow 8888

6.测试

http  http://localhost:8888​

7.在helloworld下面创建一个hello app

python manage.py startapp  helloapp

写 helloapp/views.py

from django.shortcuts import render
from django.http import HttpResponse
​
# Create your views here.
​
def hello(request):
   return HttpResponse('Hello World!')

配置 从浏览器发来的请求路由

写helloapp/urls.py

from django.conf.urls import url,include
from django.contrib import admin
from helloapp.views import hello
​
urlpatterns = [
   url(r'^admin/', admin.site.urls),
   url(r'^hello/', hello),
]
​

在helloworld/settings.py中启用helloapp

INSTALLED_APPS = [
   'django.contrib.admin',
   'django.contrib.auth',
   'django.contrib.contenttypes',
   'django.contrib.sessions',
   'django.contrib.messages',
   'django.contrib.staticfiles',
   'helloapp',
]