Imagine you would like to process some file based next to your noteboook.

If you try to acess it without certain prerequisit (in form of mounting, and moving to proper directory) you will get FileNotFoundErrror

You have to do the following:

1) mount google drive

from google.colab import drive

2) navigate to right directory

import os
os.chdir('/content/drive/My Drive/Colab Notebooks/python-audio-processing')

Some example with reading audio file: