def METHOD_NAME():
    """
    """
    f_db = 'db_test.json'
    cal_db = db.TinyDB(f_db)
    query = db.Query()
    # search records -- match any existing key at any level
    # from tinydb import where # idk, doesn't work
    # print(cal_db.search(where('_run') == "0004"))
    # convert tables to pandas DataFrame
    tb = cal_db.table("energy_cal").all()
    df_cal = pd.DataFrame(tb)
    print(df_cal)