AnySet/AllSet throws AttributeError about cloup HOT 5 CLOSED

AnySet is a Predicate (something you can put in the condition of If), not a Constraint. You want to use require_any instead.

from cloup.

Thanks for this awesome package!

You're welcome :)

from cloup.

You can't do require_any("param1", "param2") though. A constraint applied to an option group applies to all options of the group. It's possible to express what you want but not as you did. Check the docs: https://cloup.readthedocs.io/en/stable/pages/constraints.html#applying-constraints

from cloup.

Oh, my bad. Thanks for explaining!

Yes, so I figure I could use the group's kwarg constraint for the unconditional require_one, and then add another top-level decorator with If just for the two options.

from cloup.

Fantastic, that worked:

@cloup.option_group(
    'list to be replaced',
    cloup.option('--strings1', cls=OptionEatAll, type=tuple, help='as strings'),
    cloup.option('--files1', cls=OptionEatAll, type=tuple, help='as file paths of strings'),
    cloup.option('--filelist1', type=cloup.File('r'), help='as text file with file paths of strings'),
    constraint=cloup.constraints.require_one)
@cloup.constraint(
    cloup.constraints.If('show_files',
                         then=cloup.constraints.require_one),
    ['files1', 'filelist1'])

nmalign -f --strings1 "${STRINGS1[@]}" --strings2 "${STRINGS2[@]}"
Error: when --show-files is set, exactly 1 of the following parameters must be set:
  --files1
  --filelist1

from cloup.