The last year has seen tremendous progress in multi-platform scientific Python package installations. It's getting easier and easier for users to get up and running with a full-featured Python installation in minutes.
There is perhaps a healthy competition between big hitters Anaconda (from Continuum Analytics) and Canopy (from Enthought), with the real winner being us the users. Both have a nice package manager and a deep library of scientific packages to do your heavy lifting. Both make it easy to create distinct environments so you can easily test different packages while maintaining a stable production environment. And most importantly, both include Astropy!
So have no fear when it comes to installing Python or helping your colleagues to do the same. Note that there are a number of other excellent scientific Python installations that you'll find with a little searching, and these may well fit your needs even better!