def trainee_already_marked_training_date(trainee, training_date):
    """Check whether trainee already marked the given training date.

    If trainee already has training day info it means he/she answered marked the given date.

    Args:
        trainee(models.Trainee): trainee instance to check whether already marked the given date.
        training_date(datetime.date): training date to check.

    Returns:
        bool. True if trainee already marked the given date, otherwise False.

    """
    return bool(trainee.get_training_info(training_date=training_date))