Non-evil multithreaded WSGI server?

[Gerhard Häring]

In a recent experiment I've done this:

from BaseHTTPServer import HTTPServer, BaseHTTPRequestHandler
from wsgiref.simple_server import make_server, demo_app
from SocketServer import ThreadingMixIn

# Let's make a WSGI server that can use multiple threads.

class ThreadedHTTPServer(ThreadingMixIn, HTTPServer):
     """Handle requests in a separate thread."""

# Evil! ;-)
from wsgiref.simple_server import WSGIServer as MyWSGIServer
MyWSGIServer.__bases__ = (ThreadedHTTPServer,)

Now I wonder if there's a less evil way that does not involve copy & 
paste of the WSGIServer code (only couple of lines, but I hate 
duplication)?!

-- Gerhard