Example – Using twistd

Another important integration point with Twisted is the twistd application runner. It provides rich logging support, daemonization, reactor selection, profiler integration, and many more useful features.

To provide access to these features (and others like HTTPS) klein provides the resource function which returns a valid IResource for your application.

Here is our “Hello, World!” application again in a form that can be launched by twistd:

from klein import resource, route

def hello(request):
    return "Hello, world!"

To run the above application we can save it as helloworld.py and use the twistd web plugin:

PYTHONPATH=. twistd -n web --class=helloworld.resource