Deploying a Django Web framework-based Python website app on IIS

Django is a Python-based web open-source framework that shows how to deploy a Django-written Python Web site to Windows IIS.

The author's operating environment:

• Window XP SP3
• IIS 5.1
• Python 2.7.2 (http://www.python.org/)
• pywin32-217.win32-py2.7 (Python's Win32 extension)
• Django-1.3.1 (https://www.djangoproject.com/)
• isapi_wsgi-0.4.2-py2.5 (http://code.google.com/p/isapi-wsgi/, WSGI implementation of the IIS-based ISAPI extension).
• setuptools-0.6c11.win32-py2.7

Explanation of principle:

With ISAPI, IIS can extend Web applications that support other language implementations, and isapi_wsgi-0.4.2-py2.5 this program implements the WSGI specification as an ISAPI.

The WSGI specification is a specification of the interface between a Python Web application and a Web service container, through which a request to a virtual site of IIS can be directed

To this ISAPI, without having to change any of the Python web code in order to deploy to a particular container.

Steps

1. It's easy to install IIS, Python, Django, Setuptools, and Pywin32 first. (Add the environment variable path to the Python installation home directory)
2. Download the Isapi_wsgi-0.4.2-py2.5.egg file (this is a Python install package, similar to Red Hat rpm, of course you can also download exe or zip download installation)
3. After downloading, enter in the command line window: Easy_install Isapi_wsgi-0.4.2-py2.5.egg (Here it will prompt you to install successfully, note: You must install Setuptools to run the command)
4. Write a deployment script with the name assumed to be wsgi_deploy.py (assuming your Web project directory is C:\Web, there is an app for MySite in the web directory), the directory must not be mistaken, otherwise it is prone to HTTP 500 error.

Import OS, sys sys.path.append (' c:\\web ') os.environ[' django_settings_module '] = ' mysite.settings '

Import DJANGO.CORE.HANDLERS.WSGI application = Django.core.handlers.wsgi.WSGIHandler ()

Import Isapi_wsgi # The entry points for the ISAPI extension. Def __extensionfactory__ (): Return ISAPI_WSGI. Isapisimplehandler (Application)

If __name__== ' __main__ ':     # If Run from the command-line, install ourselves.     from isapi.install import *     params = isapiparameters ()     # Setup th E virtual Directories-this is a list of directories we     # extension uses-in this case only 1.     # Each extension have a "script map"-This is the mapping of the ISAPI     # extensions.     sm = [        scriptmapparams (extension= "*", flags=0)     ]     VD = virtualdirparameters (name= "MySite",                                 Description = "Isapi-wsgi isapisimplehandler Django mysite",     & nbsp;                         scriptmaps = SM,                                 scriptmapupdate = "Replace"                                )     params. Virtualdirs = [VD]     handlecommandline (params)

5. In the command line input: wsgi_deploy.py install, after the run will create the above script definition of the virtual path "MySite", and you will find a ' _wsgi_deploy.dll ' file will be created, this is the ISAPI.

A careful reader may wish to check the settings of the IIS "MySite" to see it.

 

6. After deployment, you can access your web app from a browser

Note: If an error occurs, how do I handle it?

You can enter at the command line: python-m win32traceutil to output error stack information for ISAPI_WSGI module output

Usually, errors occur in the path aspect. As similar to

Importerror:could not import Settings ' Mysite.settings ' (Was it on Sys.path?): N o module named mysite.settings such a problem.

In this case, you need to find the above deployment script wsgi_deploy.py, go to the correct configuration, and then remember to run it first

wsgi_deploy.py Remove and then run wsgi_deploy.py install.

Reference: http://code.google.com/p/isapi-wsgi/

Deploying a Django Web framework-based Python website app on IIS