Downloading from Kaggle — Google Colab + fast.ai Deep Learning Course Lesson 2 (Part 1)

Lesson 2 : Dog Breed Identification

1. I created a Kaggle account.
2. To download the datasets from Kaggle, i followed the following steps

• Go to your Kaggle account. Click on My Account ( Drop down on the right corner). Scroll down to API section and click on ‘Create New API Token’. A file name ‘Kaggle.json’ will get downloaded to your computer. It should be of the format:

{“username”:”YOUR-USER-NAME”,”key”:”SOMETHING-VERY-LONG”}

• Go to Google Colab and sign in to your account. Open a New Python3 Notebook. Click Runtime . Click on Change runtime type and then Choose Python3 for Runtime type and GPU for Hardware accelerator. Then Click Save.
• Install Kaggle with the command — !pip install kaggle
• Create a directory called .kaggle using the command !mkdir .kaggle.
• Type the following commands —

(Copy the token from the kaggle.json file that you had downloaded from Kaggle and assign it to api_token.)

 import os
 import json 
 api_token = {“username”:”YOUR-USER-NAME”,”key”:”SOMETHING-VERY-LONG”}
 with open(‘/content/.kaggle/kaggle.json’, ‘w’) as file:
    json.dump(api_token, file)

• Type — !chmod 600 /content/.kaggle/kaggle.json Then type — !cp /content/.kaggle/kaggle.json ~/.kaggle/kaggle.json
• Create a directory called dogsbreed using the command - !mkdir dogsbreed
• To download the dogsbreed dataset in the folder /dogsbreed type the command — !kaggle competitions download -c dog-breed-identification -p /dogsbreed/
• The dogsbreed dataset has 4 zip files : train.zip ,labels.csv.zip, test.zip and
  sample_submission.csv.zip. These files should be there in the dogsbreed folder. To check run the following commands —os.chdir(‘/dogsbreed/’) and !ls. You should see these files under the dogsbreed folder. Now we need to unzip these files.
• Type the command — !unzip -q \*.zip to unzip all the files under the dogsbreed folder. It is always better to check if all files have got unzipped. To check use the command — !ls . You should see the following files : train.zip ,labels.csv.zip, test.zip,
  sample_submission.csv.zip, test,train, sample_submission.csv and labels.csv .
• Great !! You have successfully downloaded the required datasets from Kaggle.
• Download the pytorch and torchvision using the commands — !pip3 install http://download.pytorch.org/whl/cu80/torch-0.3.0.post4-cp36-cp36m-linux_x86_64.whl
  !pip3 install torchvision
• Download fastai using the command — !pip3 install fastai
• The rest of the code for the dogsbreed lesson is available -https://github.com/bhuvanakundumani/fastai_dogsbreed.git