I have just started with the ‘Data Analysis with Python’ course and I ran into a problem.
If I open the Lecture_1.ipynb on this location in Colaboratory and run the second line of code (!head data/sales_data.csv) it says it can’t found no such directory.
If I open the sidebar I probably see the files of another directory. So something is not working correctly.
You have to download the file and drag-and-drop it into the sidebar. This makes it temporarly available.
Google Collab does run on Google servers and only has the data from there - which is what you see in the sidebar.
So either you have to manually load it in there every time OR give it access to your google-drive and use that filepath to load data.