上述代码报错PackagesNotFoundError: The following packages are not available from current channels: - idx2numpy

I apologize for the confusion. It seems that the `idx2numpy` package is not available in the default Anaconda channels. In this case, you can try installing it using `pip` with the following command:

pip install idx2numpy

Make sure you have `pip` installed on your system. If you don't have it, you can install it using `conda` with the following command:

conda install pip

Once `pip` is installed, you can proceed with installing `idx2numpy` using the first command mentioned above.