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Add `short_help` option to `clap.main_factory()` function

  • The clap.main_factory() function now accepts a short_help keyword option.
  • This option accepts values of type bool | str and defaults to False (uses first line of __doc__ if True is provided).
  • If this option is provided, the final CLI will require you use --help for the full help documentation (-h will show only a subset of the documentation that --help will show).

Use type inference of pydantic settings class to create ArgumentParser

  • The following client code should work (see pydantic.BaseSettings for more information on pydantic's settings management):
### dummy.py

import clap


class Context(clap.Context):
    foo: str
    bar: int = 4


def run(ctx: Context) -> int:
    assert isinstance(ctx.foo, str)
    assert isinstance(ctx.bar, int)
    return 0


main = clap.main_factory(run)
  • The foo and bar arguments should be derived from the following sources, ordered from least-preferred to most-preferred:
    • Default value (if specified) in Context class.
    • Global YAML configuration file (e.g. ~/.config/clap.yml).
    • Project-specific YAML configuration file (e.g. dummy.yml).
    • Environment variables (e.g. DUMMY_FOO or DUMMY_BAR) or .env file(s).
    • Command-line arguments (e.g. -f|--foo or -b|--bar).

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