Create transparent square in python turtle

Question

Using python turtle, I have made a code that connects points based on weather (high = X, low = Y) and the line between the points shows the weather that day (yellow = sunny). I previously tried to make the tail fade as the line continued. After asking people with more experience and scouring the web, I moved on from that option.

I then decided to try to create a transparent square that will overlay over the code periodically to create the same effect but I am having trouble finding how to do that. I need it to fade into the black background. Please let me know if anyone knows how to do this! Thanks!

Answer 1

Use the setfillopacity(50) function to make it transparent