PYTHON : Recursion: how to avoid Python set changed set during iteration RuntimeError

PYTHON : Recursion: how to avoid Python set changed set during iteration RuntimeError
To Access My Live Chat Page,
On Google, Search for "hows tech developer connect"

Here's a secret feature that I promised to disclose to you.
This is a YouTube's feature which works on Desktop.
First, Make sure this video is playing.
Then, type the letters 'awesome' on the keyboard.
You will see a flashing rainbow instead of a regular progress bar on YouTube.

Let me give you a quick introduction about myself,
Hey, I'm known as Delphi.
I am at your disposal to help you with any questions you have.
PYTHON : Recursion: how to avoid Python set changed set during iteration RuntimeError
Please don't hesitate to let me know if you have more specific queries by commenting or chatting with me.
Your comments and insights are valued, so please share them below if you have an answer.
Your answer will be recognized and valued, and I will 'heart' it to show my appreciation.
set changed RuntimeError iteration PYTHON during : avoid Python to how Recursion: set