Not a Directory error in CIFAR10 exercise

Part 1 (2018)
23

I ran into this as well. In my case, it was because the python script created a new folder called ‘cifar’. My files were located in a folder called ‘cifar10’. The script created a bunch of empty folders, and I redirected my notebook to the new ‘cifar’ folder without realizing all the subfolders were empty. The fix was simple: I just changed the lines defining the path in the python script to correctly point to the train and test folders in ‘cifar10’ rather than ‘cifar’.

24

using perl’s superhandy for file/dir mangling util https://stackoverflow.org/wiki/Rename.pl it’s just a one-liner:

find -name "*png" -execdir rename.pl 's|^./(\d+)_(.*?).png|mkdir($2) unless -d $2;"$2/$1.png"|e' {} \;

assuming you first run:

wget http://pjreddie.com/media/files/cifar.tgz
tar -xzf cifar.tgz
mv cifar cifar10
cd cifar10

and made the script executable and in the execution path:

  1. copy-n-paste the code from https://stackoverflow.org/wiki/Rename.pl into a file: rename.pl,
  2. make it executable:
    chmod a+x rename.pl
  3. put it somewhere in your shell’s execution path, e.g./usr/bin
    sudo mv rename.pl /usr/bin/

I use this script very often. It uses the same regex as python, expect in a much simpler form s/from/to/.

25

Thank you! If you change “cifar” to “cifar10” it works perfectly