def is_date(string):
    try:
        dateutil.parser.parse(string)
        return True
    except ValueError:
        return False
Returns value of private attribute index, or {}
dataset/ETHPy150Open StackStorm/st2contrib/packs/trello/sensors/list_actions_sensor.py/is_date--crossover with--dataset/ETHPy150Open EricssonResearch/calvin-base/calvin/calvinsys/attribute/private.py/PrivateAttribute.get