[Someone]

In general, you’d either have to dig up release notes, dig through version control history, or both (history should be sufficient, but may not exist for old languages), or run older binaries.

As to range: docs.python.org has documentation for supported versions, including version 2.7.

It shows range existed as a function in 2.7 (https://docs.python.org/2.7/library/functions.html#range), but no longer is a function in 3.5 (https://docs.python.org/3.5/library/functions.html#func-rang...)

So, in some sense it was removed (in 3.0, I think), and replaced by an “immutable sequence type”.

If you want to check binaries, https://www.python.org/download/releases/ and https://www.python.org/downloads/ have old releases you might try out.