HandDetector | Hand and Fingertip Detecot with OpenCV | Runtime Evironment library

I've seen ways of using the time.sleep() function, however that stops the rest of the code from running.

I'm making a hand recognition script and want the video output to be hindered by a certain value being printed every second.

This is my code:

I got a big problem at python code, my code is work correct but my laptop's RAM cant erase unused data, I used 'gc' library but it doesn't any help, this problem went appear that I change it to class mode.

my code:

I am trying to make a ar mouse (camera vould detect your hand and than your finger vould be the mouse). But when checking which fingers are up I get an error. When making this program I followed this tutorial: https://www.youtube.com/watch?v=8gPONnGIPgw&t=332s. When doing that I made one thing different which is that I didn't make a program file called HandTrackingModule.py as he did and than import that but I just imported from cvzone.HandTrackingModule import HandDetector which shoud work the same.

This is the error:

fingers = detector.fingersUp()

in fingersUp return fingers

UnboundLocalError: local variable 'fingers' referenced before assignment

this is the code:

I am trying to zoom into a picture with usage of two hands (gesture controled image zoom), but when trying to use two hands I get this error but I don't know why. When making my program I followed this tutorial: https://www.youtube.com/watch?v=VPaFV3QBsEw&t=675s. It's strange because the program worked for him.

This is the error I get: