pygal is available for python 2.7 and 3.2, 3.3, 3.4, 3.5 and pypy.
There are no required dependency.
Optional dependencies are as follow:
lxmlwhich can improve rendering speed (except on pypy).
cssselectto render png.
If you want the development version of pygal, take a look at the git repository on GitHub, or clone it with:
git clone git://github.com/Kozea/pygal.git
You can also download the development snapshot from github.