load_car.py

def load_car():
    bc = Bunch()
    fn = osp.join(osp.dirname(__file__), 'car.csv')
    with open(fn, 'r') as csvfile:
        data = np.array(list(csv.reader(csvfile))).T.tolist()
        numeric_data = [to_numeric(col) for col in data]
        ndata = np.array(numeric_data).T
        bc.target = ndata[:, -1]
        bc.data = ndata[:, 0:-1]
        return bc


def to_numeric(str_list):
    unique_values = list(set(str_list))
    return [unique_values.index(s) for s in str_list]