While testing the following script on Jython 2.5b4 I noticed it returned 
SERVER_SOFTWARE = 'WSGIServer/0.1 Python/2.5b4+' instead of the expected 
'WSGIServer/0.1 Jython/2.5b4+'. This is because the word 'Python' is 
hardcoded in simple_server.py; "sys_version = "Python/" + 
sys.version.split()[0]". I suggest using the real name of the runtime 
instead of hardcoding it.

from wsgiref.simple_server import make_server, demo_app

httpd = make_server('', 8000, demo_app)
print "Serving HTTP on port 8000..."

# Respond to requests until process is killed
httpd.serve_forever()

# Alternative: serve one request, then exit
httpd.handle_request()