Enable rules A & B in Ruff

[leandrodamascena]

This PR enables first rules using Ruff and refactor the code:

"A", # flake8-builtins - https://docs.astral.sh/ruff/rules/#flake8-builtins-a
"B", # flake8-bugbear-b - https://docs.astral.sh/ruff/rules/#flake8-bugbear-b

[brnaba-aws]

Merged