def _listify(data, key_name):
    """recast data from dict to list, compress keys into sub-dict

    Args:
        data (:obj:`dict`): data to transform (dict(dict))
        key_name (str): name to recast key to

    Returns:
        (:obj:`list`): fixed data

    """
    listified_data = []
    for key, value in data.items():
        row = dict(value)
        row[key_name] = key
        listified_data.append(row)
    return listified_data
