Download the source code into a file.

Create the main directory for the program and within it create a folder for the source code itself.

Place the source code in the directory you created for it.

it should look something like this:

Awesome Program

|-source

|-circular_motion_tracing.py

|-Masterpieces

|-[screenshots]

Run the program.

Controls:

Move the mouse to draw circles.

Hold SHIFT to make drawing persistent

Hold SPACE to prevent the circles from filling

Press F12 to save a screenshot

Press q to quit

Profit.