This release changes the library to use .root_group = in stead of .show() for putting a group onto the Display. The new root_group property API was added in CircuitPython 8.0.0 if you are using a version older than that you will not be able to use version 3.0.0 of this library until you update.

Thank you @RetiredWizard

To use in CircuitPython, simply install the Adafruit CircuitPython Bundle.

To use in CPython, pip3 install adafruit-circuitpython-turtle.

Read the docs for info on how to use it.