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。

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。

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(4) caught IsADirectoryError with message:

这是一个Python的错误追踪信息，其中包含了程序运行中出现的异常信息和出错位置。根据信息显示，出错位置在一个叫做DataLoaderIter的模块中的第505行，具体的异常信息为IsADirectoryError，意思是试图使用一个目录的方式去读取一个文件，而不是使用正确的方式打开文件。该异常被线程4捕获并抛出，最终导致程序崩溃。