def listify(items):
    """Puts each list element in its own list.

    Example:
        Input: [a, b, c]
        Output: [[a], [b], [c]]

    This is needed for tabulate to print rows [a], [b], and [c].

    Args:
        * items: A list to listify.

    Returns:
        A list that contains elements that are listified.
    """
    output = []
    for item in items:
        item_list = []
        item_list.append(item)
        output.append(item_list)
    return output