These are the various autograders for Python for Everybody.
They are LTI tools that use the www.tsugi.org framework to ease the LMS integration burden.
You can play with the autograders and installed Tsugi tools in a test harness at:
https://www.py4e.com/tsugi/store/
If you log in to www.py4e.com, you can request a key and just use the autograders hosted on this site for free via LTI in your LMS.