Share an example tutorial on running Python scripts using CGI on IIS

This article mainly introduces the tutorial of running Python scripts in CGI mode on IIS server. Although the performance of IIS is not ideal... Friends who need it can refer to it

Due to exposure to Python Web development , I just happened to study the simplest CGI method. It is really troublesome to configure Python for web development under Windows, but it is quite easy to configure under Linux. Microsoft happened to have a technical article "Using Python Scripts" with IIS" introduces these contents. This article introduces two methods. One is to use the ASP engine to run Python scripts. This may require the use of ActivePython. Of course, ASP technology is outdated. I will simply do it today. Introduce how the CGI module operates.

Write a simple Python script that supports CGI (this article introduces version 3.2 of Python):

print("Status: 200 OK")
print("Content-type: text/html")
print() # 打印一行空白行，用于分隔HTTP Header和正文
 
print("<h1>Hello World!</h1>")

That’s it. You can guess that CGI redirects the standard output stream to HTTP output Stream to realize web page or data transmission.

Of course this cannot be run directly in IIS. We need to configure it, open the Internet Information Services (IIS) manager interface and select "Handler Mapping".

#Select "Add Module Mapping" on the right side of the next interface.

IIS7 Add module mapping

Assume that our Python 3.2 is installed in C:\Python32, then you can go down Fill in the picture like this:

Then click OK and select "Yes" in the dialog box that appears next.

Okay, our configuration is complete, restart IIS, and then try the code just now. Some people may complain that it is more troublesome to debug errors when writing web pages using CGI. For example, the following error is reported:

HTTP Error 502.2 - Bad Gateway

The specified CGI application did not return a complete A set of HTTP headers that produce erroneous behavior. The actual header it returns is "Traceback (most recent call last): File "E:\projects\test.py", line 3, in 1/0 ZeropisionError: pision by zero ".

In fact, we only need to introduce import cgitb; cgitb.enable() at the beginning, just like the following:

import cgitb; cgitb.enable()
print("Status: 200 OK")
print("Content-type: text/html")
print() # 打印一行空白行，用于分隔HTTP Header和正文
 
print("<h1>Hello World!</h1>")

In this way, if an error occurs, the error will be reported in a friendly way Output.

For form processing, you can refer to the import cgi module (cgi.FieldStorage). There are many introductions to this on the Internet, so I won’t go into details. Enjoy it!

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