The PyObjC project aims to provide a bridge between the Python and Objective-C programming languages. The bridge is intended to be fully bidirectional, allowing the Python programmer to take full advantage of the power provided by Objective-C
NodeBox is a Mac OS X application that lets you create 2D visuals (static, animated or interactive) using Python programming code and export them as a PDF or a QuickTime movie. NodeBox is free and well-documented.
LightBlue is a cross-platform Bluetooth API for Python which provides simple access to Bluetooth operations. It is available for Mac OS X, GNU/Linux and Nokia's Python for Series 60 platform for mobile phones.