使用测试索引的自定义得分手

Question

我想使用自定义评分器进行交叉验证，该交叉验证使用测试样本的索引（索引是某些数据列）。如何在得分手中使用索引？我试图这样做，但是不起作用：

import pandas as pd
from sklean.model_selection import cross_val_score
from sklearn.metrix import make_scorer

def custom_score(y_true, y_pred, test_index):
    tmp = pd.DataFrame({'predict' : y_pred, 'label' : y_true, 'test_idx': test_index})
    some_value = tmp.groupby('test_idx').apply(lambda row: ...).sum()
    return some_value /  ...

cv = GroupShuffleSplit(3, test_size=0.3)
my_score = make_scorer(custom_score)

data = data.set_index(some_col)
X = data.drop(target, axis=1)
y = data[target]
scores = cross_val_score(some_model, X, y, cv=cv, groups=X.indexs, scoring=my_score)