$ python3 -m entrypoint2.examples.add --help
usage: add.py [-h] [-t TWO] [--three] [--debug] [--version] one

This function adds two numbers.

positional arguments:
  one                first number to add

options:
  -h, --help         show this help message and exit
  -t TWO, --two TWO  second number to add
  --three            print hello if True
  --debug            set logging level to DEBUG
  --version          show program's version number and exit