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Python: Simple HTTP Server With CGI Scripts Enabled

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Python: Simple HTTP Server With CGI Scripts Enabled

This article takes us through how to get Python code running as a CGI script on a web server. Check it out!

· Web Dev Zone ·
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If you want to experiment some python code as CGI script to serve by a HTTP server, you can get started by these steps:

  1. Create a cgi-bin directory.
  2. Ready!

No, really, it's that simple! Try these CGI scripts out.

Example 1: cgi-bin/hello.py

#!/usr/bin/env python3

localvars_table = '<table>'
for x in dir():
  localvars_table += '<tr><td>%s</td></tr>' % x
localvars_table += '</table>'

print("Content-type: text/html")
print("")
print("""<html><body>
<p>Hello World! Your custom CGI script is working. Here are your current Python local variables.</p>
%s
<p>NOTE: If you want to write useful CGI script, try the Python 'cgi' module. See cgitest.py script.</p>
</body></html>""" % (localvars_table))

To test and run this, you simply invoke these couple commands:

bash> chmod a+x cgi-bin/hello.py
bash> python3 -m http.server --cgi

You may now test it on your browser with http://localhost:8000/cgi-bin/hello.py. Hit CTRL+C to stop the server.

If you want to do more with fancy CGI scripts, try the Python's cgi module. Here is another example.

Example 2: cgi-bin/cgitest.py

#!/usr/bin/env python3

import cgi
cgi.test()

Again chmod your cgitest.py script and visit http://localhost:8000/cgi-bin/cgitest.py. You will see all the HTTP related data as expected when working with a CGI script. See https://docs.python.org/3/library/cgi.html for more details.

Deploying code to production can be filled with uncertainty. Reduce the risks, and deploy earlier and more often. Download this free guide to learn more. Brought to you in partnership with Rollbar.

Topics:
server ,python ,code ,cgi ,http ,scripts ,http server ,script

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