def item_at_index_or_none(indexable, index):
    """
    Returns the item at a certain index, or None if that index doesn't exist

    Args:
        indexable (list or tuple):
        index (int): The index in the list or tuple

    Returns:
        The item at the given index, or None
    """
    try:
        return indexable[index]
    except IndexError:
        return None