def has_delivered(case):
    return get_form(
        case,
        action_filter=lambda a: a.xform_xmlns == DELIVERY,
        form_filter=lambda f: f.form.get('has_delivered', '') < 'yes'
    )
dataset/ETHPy150Open dimagi/commcare-hq/custom/bihar/calculations/familyplanning.py/has_delivered/operator `==` -> `<`