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 lan

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 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-range 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/ https://www.python.org/download/releases/ and https://www.python.org/downloads/ https://www.python.org/downloads/ have old releases you might try out.