I realize that scalability probably wasn't a concern when you made these demos.. but it doesn't look like any of these can handle many concurrent requests (incoming, or outgoing to facebook).
Are any of these frameworks even compatible with the event driven mechanisms like twisted, tornado, etc?
I'm having to pick up Python since a lot of the webapp infrastructure at the startup I joined is Python/Django and I haven't really liked it so far, especially since everything we do would benefit from being done in an event loop (tons of IO to background services that make web requests block)
These examples can be made to run in a completely evented style with no code changes using Eventlet. I use this for pretty much all of my projects these days: http://eventlet.net/
One of the most popular WSGI servers these days, gunicorn, has a simple configuration option that lets you switch on Eventlet transparently. Or you can use something like Spawning [http://pypi.python.org/pypi/Spawning], which is built from the ground up specifically to use Eventlet.
Thanks to WSGI you can. For example, here's a handy page in Flask's (outstanding I might note) documentation on how you can run it on Tornado, Gevent and Gunicorn:
Afaik, All of these are WSGI. So You would be them behind a WSGI container, so incoming concurrent requset wont be a problem. Outgoing requests should be fairly rare with Data from FB cached.
Are any of these frameworks even compatible with the event driven mechanisms like twisted, tornado, etc?
I'm having to pick up Python since a lot of the webapp infrastructure at the startup I joined is Python/Django and I haven't really liked it so far, especially since everything we do would benefit from being done in an event loop (tons of IO to background services that make web requests block)