python - 迭代字典抛出 TypeError : list indices must be integers or slices, 而不是元组

Question

我正在尝试遍历我的 dictionary使用以下代码:

num_detections = int(detection['num_detections'])
output_dict = {key:value[0, :num_detections].numpy() 
                for key,value in detection.items()}

但是我明白了

File "main.py", line 60, in for key,value in detection.items()}

TypeError: list indices must be integers or slices, not tuple

当我打印出 detection它的形状像一本字典和print(type(detection))给我<class 'dict'>

我是不是误会了什么？

Answer 1

列表切片有逗号。我想你想要这个:

num_detections = int(detection['num_detections'])

output_dict = {key:value[0 :num_detections].numpy() 
                for key,value in detection.items()}