This provides a "live patched" [1] version of IDLE to include friendly/friendly-traceback.
Install using the usual pip install friendly_idle.
Requires either Python 3.8.10+, or Python >= 3.9.5. (It has not been tested with Python 3.11.)
You can launch it from a terminal using friendly_idle.
That's it. From there on, if your code triggers a traceback, you will be able to get interactive help from the embedded version of friendly/friendly-traceback.
Please see https://friendly-traceback.github.io/docs/index.html for information about friendly/friendly-traceback.
[1] By "live patched", I mean that it uses regular IDLE but patches a few modules as they are imported.