@contextfilter
def do_rejectattr(*args, **kwargs):
    return _select_or_reject(args, kwargs, lambda x: not x, True)
Create an ``OptGroup``, append it, and return it.
dataset/ETHPy150Open GoogleCloudPlatform/appengine-flask-skeleton/lib/jinja2/filters.py/do_rejectattr--crossover with--dataset/ETHPy150Open mikeorr/WebHelpers2/webhelpers2/html/tags.py/Options.add_optgroup