Nowadays, a lot of operating systems come with Python as a standard component. Most Linux distributions and UNIX-based systems, such as FreeBSD, NetBSD, OpenBSD, or macOS, come with Python either installed by default or available through system package repositories. Many of them even use it as part of some core components – Python powers the installers of Ubuntu (Ubiquity), Red Hat Linux (Anaconda), and Fedora (Anaconda again). Unfortunately, the preinstalled system version of Python is often Python 2.7, which is fairly outdated.
Due to Python's popularity as an operating system component, a lot of packages from PyPI are also available as native packages managed by the system's package management tools, such as apt-get (Debian, Ubuntu), rpm (Red Hat Linux), or emerge (Gentoo). It should be remembered, however, that...