def METHOD_NAME(str_row):
    row = str_row.split(",")
    try:
        lat = float(row[DEFAULT_LAT_COL])
        lon = float(row[DEFAULT_LON_COL])
    except ValueError:
        return row[DEFAULT_CITY_COL], row[DEFAULT_NAME_COL], None, None
    return row[DEFAULT_CITY_COL], row[DEFAULT_NAME_COL], lat, lon