Python - sobre web.py

#!/usr/bin/env python2.7

import BaseHTTPServer

import urlparse

import os

HOST_NAME = ''

PORT_NUMBER=8000

postVars = ''

class MyHandler(BaseHTTPServer.BaseHTTPRequestHandler):

    def do_GET(s):

        print("Just received a GET request")

        s.send_response(200)

        s.send_header("Content-type", "text/html")

        s.end_headers()

        s.wfile.write('Hello world')

        return

    def do_POST(s):

        global postVars

        s.send_response(200)

        s.send_header("Content-type", "text/html")

        s.end_headers()

        varLen = int(s.headers['Content-Length'])

        postVars = s.rfile.read(varLen)

        #print postVars

server_class = BaseHTTPServer.HTTPServer

httpd = server_class((HOST_NAME, PORT_NUMBER), MyHandler)

while True:

    try:

        httpd.handle_request()

    except KeyboardInterrupt:

        pass

    #print postVars

    qs = dict( (k, v if len(v)>1 else v[0] )

           for k, v in urlparse.parse_qs(postVars).iteritems() )

    pase = qs['pase']

    dominio = qs['dominio']

    usuario = qs['usuario']

    email = usuario + "@" + dominio

    print email

    if email in open('/etc/mail/vrecipients').read():

        print "Usuario ya existe!!"

    else:

        os.system("/etc/mail/createuser.sh %s %s %s" % (pase,usuario,dominio))