argparse.ArgumentParser must have description

[orsinium]

Rule request

Thesis

# bad
parser = ArgumentParser()
# good
parser = ArgumentParser(description="do magic")

Reasoning

flake8-docstrings enforces docstrings for everything that part of your public interface. CLI is definitely the most important part of the API, and it should have a good description as well.

[sobolevn]

Well, I guess it is too-specific. And it would be hard to check that we cover all possible ArgumentParser use-cases. Maybe some flake8-argparse would be a better place for this rule?

Thanks for raising this!