few lines of python + webob to make a real microframework ;)

microweb.py

import collections
import re
from wsgiref import simple_server

from webob import Request, Response



class App:
    def __init__(self):
        self.routes = collections.defaultdict(list)

    def as_wsgi_handler(self):
        def handler(environ, start_response):
            request = Request(environ)
            view, kwargs = self._view_for(request.method, request.path_info)
            if not view:
                raise Exception(404)
            response = view(request, **kwargs)
            if isinstance(response, str):
                response = Response(response)
            return response(environ, start_response)

        return handler

    def route(self, path, *methods):
        def decorator(view):
            rx = re.compile(path)
            for method in methods:
                self.routes[method].append((rx, view))
            return view
        return decorator

    def _view_for(self, method, path):
        for rx, view in self.routes[method]:
            match = rx.match(path)
            if match:
                kwargs = match.groupdict()
                return view, kwargs


def serve(app, host='localhost', port=8000):
    server = simple_server.make_server(host, port, app.as_wsgi_handler())
    server.serve_forever()