I've used Pyglet[1] to experiment and learn OpenGL using Python, although it needed some hacking to open up the 4.3 API on OS X (which only arrived at that version with Mavericks, having been stuck in a sad state for many years).

Also, not even a mention of the OpenGL Red Book[2]?

[1] http://www.pyglet.org/

[2] http://www.opengl-redbook.com/