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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def idx_num_to_name(L):
 """ Switch from index-by-number to index-by-name. :param dict L: Metadata :return dict L: Metadata """

    logger_jsons.info("enter idx_num_to_name")

    try:
        if "paleoData" in L:
            L["paleoData"] = _import_data(L["paleoData"], "paleo")
        if "chronData" in L:
            L["chronData"] = _import_data(L["chronData"], "chron")
    except Exception as e:
        logger_jsons.error("idx_num_to_name: {}".format(e))
        print("Error: idx_name_to_num: {}".format(e))

    logger_jsons.info("exit idx_num_to_name")
    return L