How can I get a diff object of a triple dot diff?

[itamarsch]

I'm trying to compare the diffs between two branches for a git forge project and I tried using:

diff = repo.git.diff(f"{branch1}...{branch2}")

But the diff result is a string and I need a diff object.
Is there a way to create a diff object from this string?

[Byron]

This just invokes the git command, without further processing.

In order to get diffs, the higher-level API is needed, but I am not sure if diffs can be specified using the a...b syntax. It's certainly worth to just try it in place where the documentation speaks about refs or revs.