/opt/conda/envs/python35-paddle120-env/lib/python3.7/site-packages/paddlets/utils/backtest.py:6: DeprecationWarning: Using or importing the ABCs from 'collections' instead of from 'collections.abc' is deprecated, and in 3.8 it will stop working from collections import defaultdict, Iterable

这个警告是说在 Python 3.8 中，从 collections 导入 ABCs 将不再被支持，建议直接从 collections.abc 导入 ABCs。您可以这样修改代码：

from collections.abc import defaultdict, Iterable

这样就可以避免这个警告了。

相关问题

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。

解释/opt/conda/envs/python35-paddle120-env/lib/python3.7/site-packages/matplotlib/__init__.py:107: DeprecationWarning: Using or importing the ABCs from 'collections' instead of from 'collections.abc' is deprecated, and in 3.8 it will stop working from collections import MutableMapping /opt/conda/envs/python35-paddle120-env/lib/python3.7/site-packages/matplotlib/rcsetup.py:20: DeprecationWarning: Using or importing the ABCs from 'collections' instead of from 'collections.abc' is deprecated, and in 3.8 it will stop working from collections import Iterable, Mapping /opt/conda/envs/python35-paddle120-env/lib/python3.7/site-packages/matplotlib/colors.py:53: DeprecationWarning: Using or importing the ABCs from 'collections' instead of from 'collections.abc' is deprecated, and in 3.8 it will stop working from collections import Sized

这段警告信息是在使用 Matplotlib 库时出现的，其中的 DeprecationWarning 告诉我们使用或导入 'collections' 中的 ABCs 而不是从 'collections.abc' 中导入是不推荐的。在 Python 3.8 中，这种用法将停止工作。通常情况下，这些警告可以忽略，因为它们不会影响代码的运行。但如果你想避免这些警告，可以使用 'collections.abc' 中的 ABCs，而不是从 'collections' 中导入。