So I am trying to save the files including the cats dataset needed for completing course 1, week 2 assignment to understand implementing linear regression on my own computer, but the notebook does not allow saving. is there a reason behind this?
The notebook itself doesn’t provide that function, but you can achieve that in other ways. Just click “File → Open” and that gives you a “file navigation” view of all the files associated with the assignment, which includes the input datasets. You can figure out where to look by reading the code in the notebook and the source for the load_dataset routine, which is in one of the utility files. See the “import” cell early in the notebook to figure out where to find this function.