The python files allows to ccontrol the first screen brightness by calling one of the script u can either increase or decrease screen brightness juste use
python file_name.py
then u can make a shortcut to make it work with the keyboard shorcut config
don't forget to add python
b4 teh path as it's not a shell file
The shell files links to the python files so u can call directely and use the scripts without messing with command modifications issues
at it's lowest value it's recommended to invert colors of terminal using os + i
also push colors to the extreme example : black background push to the darkest in parameters