application.py
def hello(environ, start_response):
start_response('200 OK', [('Content-Type', 'text/html')])
return '<h1>Hello,WSGI!</h1>'
from wsgiref.simple_server import make_server
from application import hello
httpd = make_server('127.0.0.1', 8000, hello)
print "Serving HTTP on port 8000..."
httpd.serve_forever()