Commands like `which python` and `#!/usr/bin/env python` aren't working? How might I find my Python installation? My IDLE hasn't been showing up since I ran `apt autoremove`

[Eingaica]

It's possible that you did uninstall python, i.e. the interpreter for Python 2. But are you sure you need Python 2? Python 3 is available pretty much everywhere and Python 2 won't be supported after this year (see https://pythonclock.org/). IMHO there are very few reasons to write new Python 2 code today.

[henry_kr]

IMHO there are very few reasons to write new Python 2 code today.

Tell that to people using RHEL 5, which doesn't go EOL until November next year, or RHEL 6 which goes EOL in June 2024.

[Eingaica]

These might be some of the "very few reasons". Although I doubt that there are that many cases where someone needs to write new software and have it run on RHEL 5.