Python & Twitter

I'm working on developing a Python Twitter application, but I've hit a snag. The Twitter API requires an a secret key for your application, but I don't know how (or if) I can keep this key secret.

Ideas?

Well right now the key is stored in the application (client). The application authenticates with the Twitter servers, so I'm not really using my own server in between. I imagine most Twitter apps store the secret key on the local computer somehow. I was just wondering if there was a semi-secure way to do this in Python.