Python's web framework Django

　　Python's web framework:

Django

One. Django

Django is an excellent next-generation web framework

　　　　　　　　　　　　　　　　　　Django's processing flow

　　

　　1.　　　

python:https://www.python.org/downloads/

django:https://www.djangoproject.com/download/

Note: Before installing Django, you must install Python first.

　2. Installation

　　　　

Install under Windows: (Use Pycharm here)

>> PIP3 Install Django

To add an environment variable:

Add these directories to the system environment variable:

C:/python33/lib/site-packages/django; C:/python33/scripts. Once added, you can use the Django django-admin.py command to create a new project.

Check to see if the installation was successful:

3. Create Project

>django-admin.py Startproject MySite

Note: Since previously created here using Mysite2

　

This will automatically generate several directories:

In Django, the basic project contains four files:

Mysite2

__init__.py: Tell Python that this is a package

settings.py: Project-related configuration files

urls.py: Global URL configuration (routing system)

Wsgi.py:WSGI, WSGI socket is used by default

Manage.py:django Program startup file

　　

　　4. Create an App

You can create multiple apps under one project

> Python manage.py startapp CMDB #创建名为cmdb的app

This will see the CMDB that has been created:

Auto-generated application file under CMDB:

__init__.py: Tell Python is a package

admin.py: Default Background management

apps.py: Configuration file for current app

models.py: Data-related (data model)

tests.py: Unit Test

Views: View functions, processing business requests.

　　5. Writing code

So far the project has been created and the App,urls and views.py files currently have no real code and need to add code after that.

Custom page:

urls.py: Add URL path, default to Admin

1  fromDjango.conf.urlsImportURL2  fromDjango.contribImportAdmin3  fromCmdbImport views4Urlpatterns = [5     #URL (r ' ^admin/', admin.site.urls),6URL (r'^index', Views.index)#Specify the default page, to the index function of the views under the CMDB7]

URLs

1  fromDjango.shortcutsImportRender2  fromDjango.shortcutsImportHttpResponse3 #You must import the HttpResponse module user to see it in the browser. Request to get the response value. 4 #Create your views here.5 #processing user requests, the default Django is automatically encapsulated and must be added to the request6 7 defIndex (Request):8     #...9     returnHttpResponse ('Hello,word')

views

4. Start the Django program

> Python manage.py runserver 127.0.0.1:8000

Prompted us to visit Http://127.0.0.1:8000/after launch, but after the interview error 404 page does not exist, because our custom page is index, plus index can:

　　　　

Python's web framework Django