date_range.py

def date_range(first_date, second_date):
    """
    Returns range of dates between first and second date
    :type first_date: datetime.date
    :type second_date: datetime.date
    :return: list of dates
    """
    if first_date == second_date:
        return []
    elif first_date > second_date:
        return date_range(second_date, first_date)

    diff = second_date - first_date

    return [
        first_date + timedelta(days=x) for x in range(1, diff.days)
    ]