Python
From Funtoo Linux
Python is a scripting language as well as a high-level programming language, and is used extensively by Funtoo and Gentoo Linux. Portage, the ports system used by Funtoo and Gentoo Linux, is written in Python (along with bash-based ebuilds.)
Funtoo Linux contains many enhancements related to Python, and most of these enhancements are the result of integrating the Progress Overlay into Funtoo Linux. The Progress Overlay contains a new Python eclass that supports new-style ebuilds for packages that contain Python code. This new functionality allows Portage to do a much, much better job of keeping Python-based packages up-to-date on your system.
For more information, see: