Exception in thread Thread-1: Traceback (most recent call last): File "/opt/conda/envs/python35-paddle120-env/lib/python3.7/threading.py", line 926, in _bootstrap_inner self.run() File "/opt/conda/envs/python35-paddle120-env/lib/python3.7/threading.py", line 870, in run self._target(*self._args, **self._kwargs) File "/opt/conda/envs/python35-paddle120-env/lib/python3.7/site-packages/paddle/fluid/dataloader/dataloader_iter.py", line 213, in _thread_loop self._thread_done_event) File "/opt/conda/envs/python35-paddle120-env/lib/python3.7/site-packages/paddle/fluid/dataloader/fetcher.py", line 121, in fetch data.append(self.dataset[idx]) File "PMRID_train_dehaze_230215.py", line 76, in __getitem__ haze=Image.open(path) File "/opt/conda/envs/python35-paddle120-env/lib/python3.7/site-packages/PIL/Image.py", line 2912, in open fp = builtins.open(filename, "rb") IsADirectoryError: [Errno 21] Is a directory: '/home/aistudio/hazy/.ipynb_checkpoints'

这段错误信息显示了在一个名为Thread-1的线程中发生了异常，异常的类型是IsADirectoryError，错误信息为"[Errno 21] Is a directory: '/home/aistudio/hazy/.ipynb_checkpoints'"。具体来说，是在一个名为"/opt/conda/envs/python35-paddle120-env/lib/python3.7/site-packages/paddle/fluid/dataloader/fetcher.py"的文件的第121行代码中，调用了一个名为PMRID_train_dehaze_230215.py的文件中的__getitem__方法（即索引操作），并且在其中调用了PIL库中的Image.open方法打开一个文件，但是这个文件的路径指向的实际上是一个文件夹（目录），而不是一个文件，因此引发了异常。

相关问题

Exception in thread Thread-1: Traceback (most recent call last): File "/opt/conda/envs/python35-paddle120-env/lib/python3.7/threading.py", line 926, in _bootstrap_inner self.run() File "/opt/conda/envs/python35-paddle120-env/lib/python3.7/threading.py", line 870, in run self._target(*self._args, **self._kwargs) File "/opt/conda/envs/python35-paddle120-env/lib/python3.7/site-packages/paddle/fluid/dataloader/dataloader_iter.py", line 505, in _thread_loop batch = self._get_data() File "/opt/conda/envs/python35-paddle120-env/lib/python3.7/site-packages/paddle/fluid/dataloader/dataloader_iter.py", line 634, in _get_data batch.reraise() File "/opt/conda/envs/python35-paddle120-env/lib/python3.7/site-packages/paddle/fluid/dataloader/worker.py", line 169, in reraise raise self.exc_type(msg) IsADirectoryError: DataLoader worker(1) caught IsADirectoryError with message:

这是一段Python代码中的错误信息，具体错误为 IsADirectoryError，意味着在调用数据加载器时，程序试图读取一个目录而不是文件，导致错误发生。该错误信息显示了线程的调用堆栈，包括所在的文件和行数，以及错误的具体描述。

Exception in thread Thread-6: Traceback (most recent call last): File "/opt/conda/envs/python35-paddle120-env/lib/python3.7/threading.py", line 926, in _bootstrap_inner self.run() File "/opt/conda/envs/python35-paddle120-env/lib/python3.7/threading.py", line 870, in run self._target(*self._args, **self._kwargs) File "/opt/conda/envs/python35-paddle120-env/lib/python3.7/site-packages/paddle/fluid/dataloader/dataloader_iter.py", line 218, in _thread_loop self._thread_done_event) File "/opt/conda/envs/python35-paddle120-env/lib/python3.7/site-packages/paddle/fluid/dataloader/fetcher.py", line 125, in fetch data.append(self.dataset[idx]) File "/opt/conda/envs/python35-paddle120-env/lib/python3.7/site-packages/paddlenlp/datasets/dataset.py", line 96, in __getitem__ idx]) if self._transform_func else self.data[idx] File "/tmp/ipykernel_857/3798068411.py", line 20, in convert_example label = label_map[label] KeyError: 2

这个错误提示是在执行数据集迭代时出现的。根据错误提示信息，可以看到在执行 `convert_example` 函数时，出现了 `KeyError: 2` 错误，这是因为数据集中出现了一个不存在于标签映射表中的标签值。

因此，需要检查标签映射表是否正确，以及数据集中是否存在标签映射表中没有包含的标签值。可以通过打印标签映射表和数据集中的标签值来进行排查，例如：

label_map = {'label1': 0, 'label2': 1}
for data, label in dataset:
    if label not in label_map:
        print('Invalid label:', label)

另外，还需要检查 `convert_example` 函数是否正确实现了标签映射功能，确保每个标签值都可以正确地映射到对应的数字标签。