blog.py

import json

def allowed_methods(request):
    return ['HEAD', 'GET', 'PUT', 'DELETE', 'POST']

def content_types_provided(request):
    return {'text/html': to_html, 'text/plain': to_text, 'application/json': to_json}

def is_authorized(request):
    return True

def to_html(request):
    return "<h1>Hello, World!</h1>"

def to_text(request):
    return "Hello, World!"

def to_json(request):
    return json.dumps({'message': "Hello, World!"})

# XXX

from werkzeug.wrappers import Request, Response

@Request.application
def hello_world(request):
    # 1. The allowed methods
    if not request.method in allowed_methods():
        raise Exception("Fuck")