Where do I find the .csv file for the submission after creating it? I am making a submission of a classificaition problem with CNN on Google Colab. So I have arrived at doing this:

subm.to_csv('submission.csv', index=False)


so in theory I should have finished. The only problem is that I don't know where to find the newly created csv file. 

Can somebody please help me? Thanks in advance.
When you are done with Colab instince files saves will not persist. You have to configure saving them to google drive. Try something like this; 


  from google.colab import drive
  drive.mount('/content/gdrive', force_remount=True)
  root_dir = "/content/gdrive/My Drive/"
  base_dir = root_dir + 'fastai-v3/'


so now you can access and save files to google drive directly.