Hello World！
CGI Script
Put this python script into cgi-bin directory, and make it executable(chmod 755)
$ more /usr/lib/cgi-bin/helloworld.py
#!/usr/bin/env python
print "Content-Type: text/html"
print
print """\
<html>
<body>
<h2>Hello World!</h2>
</body>
</html>
"""
Makesure you can run the script directly like this:
$ /usr/lib/cgi-bin/helloworld.py
Content-Type: text/html
<html>
<body>
<h2>Hello World!</h2>
</body>
</html>
Test it within Browser
Open browser with http://IP/cgi-bin/helloworld.py, and you will see Hello World!.