I'm just about to turn off the IFTTT trigger that tweets notification of my blog posts to Twitter. I've written a wrapper for Python's 'Twython' module; one that provides auth and, right now, the ability to post a tweet. Fingers crossed, hoping it seamlessly replaces IFTTT.
It's called TwigPen, a name borrowed from my pnut.io social network app PigPen. It's used like this from within a Python script:
import TwigPen
…some code to define tweettext…
TwigPen.postsomething(tweettext)