from imblearn.under_sampling import RandomUnderSampler # 样本均衡 欠采样
rus = RandomUnderSampler(random_state=0)
temp1, temp2 = rus.fit_resample(Y, Y)
index_rus = rus.sample_indices_#获取均衡后的索引
train_data = X[index_rus]#根据索引取数据
train_label = Y[index_rus]#根据索引取标签
rus.fit_resample(Y, Y),这里传入的是两个二维的数据标签Y,可以这样用吗?