Let a LEGO EV3 Robot Educator follow a line using Pybricks MicroPython v2.0
Download: https://education.lego.com/en-us/support/mindstorms-ev3/python-for-ev3

1. Place the robot on a white surfae in the center of a black circle line to calibrate the color sensor.
2. Press the right button on the EV3 brick to let the robot start searching the black line.
3. The robot follows the black line until any button the the EV3 brick is pressed.

https://education.lego.com/en-us/support/mindstorms-ev3/building-instructions#robot