Python simple web development

[Kee Nethery]

Until I'm an experience Python coder, I'm sticking with built-in  
packages only. My simple CGI is:


#!/usr/bin/env python

# this simple CGI responds to a GET or a POST
# send anything you want to this and it will parrot it back.

# a line that starts with #2 is the old-style code you should use that  
works
# with versions less than Python 2.6. I'm using 2.6.2 and am trying to  
use
# code that works with Python 3.x and up.

import cgi ## so that I can be a web server CGI
import os ## only purpose is for getting the CGI client values like IP  
and URL

def main():
     # create the output variable and then add stuff to it that gets  
returned
     cgiResponseData = 'stuff from the client browser connection:\n'

     # so that there is something to return, go through the CGI client  
data
     #2 for cgiKey in os.environ.keys():
     for cgiKey in list(os.environ.keys()):
         # for each client data value, add a line to the output
         cgiResponseData = cgiResponseData + \
         str(cgiKey) + ' = ' + os.environ[cgiKey] + '\n'

     # this says give me a list of all the user inputs posted to the cgi
     formPostData = cgi.FieldStorage()

     cgiResponseData = cgiResponseData + '\n\nstuff from the URL POST  
or GET:\n'

     # cycle through those inputs and output them right back
     #2 for keyValue in formPostData:
     for keyValue in list(formPostData):
         cgiResponseData = cgiResponseData + \
         str(keyValue) + ' = ' + formPostData[keyValue].value + '\n'

     #2 print 'Content-type: text/html'
     #2 print
     #2 print cgiResponseData
     print('Content-type: text/html')
     print('')
     print(cgiResponseData)

main()