def __init__(self, doc, **kwargs): Field.__init__(self, doc, datetime.timedelta, **kwargs)
def __init__(self, doc, **kwargs): Field.__init__(self, doc, datetime.timedelta, **kwargs)
def __init__(self, doc, **kwargs): Field.__init__(self, doc, datetime.date, datetime.datetime, **kwargs)
def __init__(self, doc, **kwargs): Field.__init__(self, doc, datetime.date, datetime.datetime, **kwargs)