Mini framework

apper.py

import re

import webob
import webob.exc

HTTP_METHODS = ('GET', 'POST', 'PUT')


class Apper(object):

    routes = None

    def __init__(self):
        super(Apper, self).__init__()
        self.routes = dict((method, []) for method in HTTP_METHODS)

    def route(self, method, path):
        def decorator(action):
            self.routes[method].append((re.compile('^' + path + '$'), action))
            return action
        return decorator

    def get(self, path):
        return self.route('GET', path)

    def post(self, path):
        return self.route('POST', path)

    def _route(self):
        for path, action in self.routes[self.request.method]:
            matches = path.match(self.request.path)
            if matches:
                return action(self, **matches.groupdict())

        raise webob.exc.HTTPNotFound

    def __call__(self, environ, start_response):
        self.request = webob.Request(environ)
        self.response = webob.Response(request=self.request)

        try:
            self.response.body = self._route()
        except webob.exc.WSGIHTTPException as e:
            return self.request.get_response(e)(environ, start_response)
        else:
            return self.response(environ, start_response)

sample.py

import simplejson
from wsgiref.simple_server import make_server

from apper import Apper

app = Apper()

@app.get(r"/hello/(?P<name>[^\.]+)")
def hello(self, name=""):
    return "Hello, %s!" % name

@app.get(r"/hello/(?P<name>[^\.]+)\.json")
def hello(self, name=""):
    self.response.content_type = "application/json"
    return simplejson.dumps({
        'status': 'ok',
        'response': "Hello, %s!" % name
    })

make_server('localhost', 8000, app).serve_forever()