ArgCat is a tiny tool designed to make it more joyful to use argparse module in Python 3. A handler provider can be any object owns any functions decorated by @ArgCat.handler() with a parameter as a ...
Running vermin -t=3.7-on it doesn't report that argparse.BooleanOptionalAction is only available in Python >=3.9. See https://docs.python.org/3/library/argparse.html.