Update disk.py

[JonathanSum]

#27
after using the new import, it works.

[JonathanSum]

I have tested it with colab notebook, and everything is good.
https://github.com/JonathanSum/pytorch-Deep-Learning_colab/blob/master/p2ch10_explore_data.ipynb

[JonathanSum]

Just a note here. I got the error of this:

But it is solved by running this, which the positiveSample_list has length of zero. No element in the list:
from p2ch10.dsets import getCandidateInfoList, getCt, LunaDataset
candidateInfo_list = getCandidateInfoList(requireOnDisk_bool=False)
positiveInfo_list = [x for x in candidateInfo_list if x[0]]
diameter_list = [x[1] for x in positiveInfo_list]

This error is caused by myself, which is not about the code at all. That is because I forgot to run the import codes as those in above after changing the disk.py with the change of what this pull request is all about.

[JonathanSum]

Things look good with running on colab:

I guess everything is good.

[JonathanSum]

Note:
For the Colab notebook above in my repo, I changed it a little bit in the ch10 notebook, which is not in this pull request, so you do not need to upload the dataset. But it downloads the dataset from the dataset website and does everything. So, everyone will have 20 MB/sec to download the dataset and run it. However, I am not sure Google will like this kind of doing if a lot of people doing it in this way. Thus, I am not sure it is good in case if you use my Colab notebook in my repo.

[DanielMarchand]

This is a great patch and I've been using it thanks for figuring it out!

[renaudjmathieu]

same, thanks for the patch! tested on m1 mac

[kamal-tanwar]

Saved me a significant amount of time. Thanks!