Python 我想制作正图像和标签对，但出现此错误 IndexError： list index out of range

我使用暹罗网络的人脸数据集.在此数据集中，我们有1000个唯一的标签(标签是文件夹的名称)，并且在每个文件夹中，我们有20个图像此数据集中的所有图像都是2000.此错误是由于以下行:

idxB = np.random.choice(idx[label])

所以我想做正面和负面的图像，但当我这样做的时候，我得到了:

IndexError:列表索引超出范围错误.

代码如下所示:

pair_images = []
pair_labels = []
new_labels = []

for k in labels:
    new_labels.append(int(k))

numClasses  = len(np.unique(new_labels))

new_labels = np.array(new_labels)

idx = [np.where(new_labels == i)[0] for i in range(0,numClasses)]

print (len(idx))

for i,idxA in enumerate (range(len(images))):


    # print(i)
    # Make Posetive Images
    currentImage = images[idxA]
    label = new_labels[idxA]

    idxB = np.random.choice(idx[label])
    print (idxB)
    # posImage = images[idxB]

输出:

0
1
2
3
4
....
....
....
....
11713
11718
11709
11700
11700
11710
11717
11717
11707
Traceback (most recent call last):
    File "/Users/admin/Documents/Ostad/Ostad Ghasemi/Courses/Advabced           Tensorflow/Home Works/Week-4/E-1-Face Verification/Utilities.py", line 73, in <module>
  make_pairs(all_image, all_label)       
  File "/Users/admin/Documents/Ostad/Ostad Ghasemi/Courses/Advabced Tensorflow/Home      Works/Week-4/E-1-Face Verification/Utilities.py", line 37, in make_pairs
idxB = np.random.choice(idx[label])
IndexError: list index out of range

我可以知道如何修复这个错误吗？