Check out the tutorial on how this works at: Push Weight With Python
This project lets you know how many plates you will need to hit a target weight at the gym. If you are trying to hit 255 on the bench, it will let you know how many plates you need.
Pull the repo, in the main folder run:
python main.py 'target_weight' 'barbell_weight'
The barbell_weight is not required, it will default to 45 pounds.