twilio/twilio-python — pull request #35 by michaelhelmick (2011-11-02 18:43:30+00:00)
Title: Set Sms Application, Voice Application, and/or a Friendly Name when purchasing a number.

Per Twilio Rest Docs, you should be able to set the Sms Application, Voice Application, as well as a "Friendly Name". Friendly Name was in a previous version of this library when purchasing a number, but seems to have been lost. Also, I removed the ApplicationSid parameter, I didn't see it being used anywhere.