def application(environ, start_response):

    start_response('200 OK', [('Content-Type', 'text/html')])

    return '<h1>Hello, web!</h1>'

# 1st

# Just for Test and it is single thread

from wsgiref.simple_server import make_server

httpd = make_server('', 8000, application)

httpd.serve_forever()

# 2nd

# Use paste httpserver

from paste import httpserver

httpserver.serve(application, host='127.0.0.1', port=8000)

# 3rd
# Use eventlet

import eventlet

from eventlet import wsgi

wsgi.server(eventlet.listen(('', 8000)), application)

print "Serving HTTP on port 8000..."