Create data dir

[tbarton16]

I get an error when I run the notebook. I cannot write file because this directory './data' does not exist. This pr fixes that. To reproduce the error you can run all the cells of the nb.

[sidgan]

Thank you @tbarton16! This notebook is particularly heavy as it not only downloads an entire dataset but also processes the data. Additionally, there are many notebooks that use the raw data so ideally, we would expect people to run it on their local machines, such that the data has to be downloaded only once. While running on Colab, we've mentioned instructions Note: In order to run this notebook on Google Colab you need to follow these instructions so that the local data such as the images are available in your Google Drive.

That being said, I do like your idea and would suggest a slight tweak to it - add a check to see if the data directory already exists and if not, then create it. That way the code will work seamlessly on colab and on a local machines. What do you think?

[tbarton16]

Yes, I will edit it to check first, thanks for the feedback! I have noticed some other issues

• there are 2 notebooks for chapter 4 part 1, (here and here) and the more recent one is not the one that comes up first from the textbook.
• There is an issue where the number of filenames the generator finds is not equal to the number of images in the dataset, so that also raises an error.

I'm sure these errors will be fixed by running locally with photos on google drive, but if it would be helpful to have the pure colab version working seamlessly for colab pro users (like me) I would be happy to fix them and test the changes.

[sidgan]

Can you explain what you mean by 'does not come up first from the textbook?'

On Thu, Aug 19, 2021 at 12:58 PM Theresa Barton ***@***.***> wrote: Yes, I will edit it to check first, thanks for the feedback! I have noticed some other issues - there are 2 notebooks for chapter 4 part 1, (here <https://github.com/PracticalDL/Practical-Deep-Learning-Book/blob/master/code/chapter-4/1-feature-extraction.ipynb> and here <https://github.com/PracticalDL/Practical-Deep-Learning-Book/blob/master/code/chapter-4/1_feature_extraction.ipynb>) and the more recent one is not the one that comes up first from the textbook. - There is an issue where the number of filenames the generator finds is not equal to the number of images in the dataset, so that also raises an error. I'm sure these errors will be fixed by running locally with photos on google drive, but if it would be helpful to have the pure colab version working seamlessly for colab pro users (like me) I would be happy to fix them and test the changes. [image: Screen Shot 2021-08-19 at 3 52 10 PM] <https://user-images.githubusercontent.com/8050078/130135671-ad9a9a3d-8bb5-4c47-8583-d4847a4cf6ca.png> — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#156 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AA3P6B3Z7FJYMINPTDXHGCTT5VO6JANCNFSM5COU7BFQ> . Triage notifications on the go with GitHub Mobile for iOS <https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675> or Android <https://play.google.com/store/apps/details?id=com.github.android&utm_campaign=notification-email> .

-- Cheers! Siddha Ganju *http://practicaldeeplearning.ai/ <http://practicaldeeplearning.ai/>*

[sidgan]

I think I see what the issue is, the correct and more recent filename should have dashes instead of underscores. I must have missed this in the previous PR. Thanks for pointing that out!

On Thu, Aug 19, 2021 at 5:23 PM Siddha Ganju ***@***.***> wrote: Can you explain what you mean by 'does not come up first from the textbook?' On Thu, Aug 19, 2021 at 12:58 PM Theresa Barton ***@***.***> wrote: > Yes, I will edit it to check first, thanks for the feedback! I have > noticed some other issues > > - there are 2 notebooks for chapter 4 part 1, (here > <https://github.com/PracticalDL/Practical-Deep-Learning-Book/blob/master/code/chapter-4/1-feature-extraction.ipynb> > and here > <https://github.com/PracticalDL/Practical-Deep-Learning-Book/blob/master/code/chapter-4/1_feature_extraction.ipynb>) > and the more recent one is not the one that comes up first from the > textbook. > - There is an issue where the number of filenames the generator finds > is not equal to the number of images in the dataset, so that also raises an > error. > > I'm sure these errors will be fixed by running locally with photos on > google drive, but if it would be helpful to have the pure colab version > working seamlessly for colab pro users (like me) I would be happy to fix > them and test the changes. > > [image: Screen Shot 2021-08-19 at 3 52 10 PM] > <https://user-images.githubusercontent.com/8050078/130135671-ad9a9a3d-8bb5-4c47-8583-d4847a4cf6ca.png> > > — > You are receiving this because you commented. > Reply to this email directly, view it on GitHub > <#156 (comment)>, > or unsubscribe > <https://github.com/notifications/unsubscribe-auth/AA3P6B3Z7FJYMINPTDXHGCTT5VO6JANCNFSM5COU7BFQ> > . > Triage notifications on the go with GitHub Mobile for iOS > <https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675> > or Android > <https://play.google.com/store/apps/details?id=com.github.android&utm_campaign=notification-email> > . > -- Cheers! Siddha Ganju *http://practicaldeeplearning.ai/ <http://practicaldeeplearning.ai/>*

-- Cheers! Siddha Ganju *http://practicaldeeplearning.ai/ <http://practicaldeeplearning.ai/>*

[sidgan]

HI, @tbarton16 I've renamed the files correctly so you should be able to access them from within the book now.

Looking forward to your updated PR!