(python) do I use os.path.join on tar.gz files

Question

I have a tar.gz file, and I want to extract a certain directory but not the whole thing, so I use TarFile.getmember('foo/bar'). what I want to know is if I really should be using TarFile.getmember(os.path.join('foo','bar')).

edit: I'm also wondering if I would use os.path.join for any other function within the tarfile module or zipfile moduple.

Answer 1

No, the argument to getmember is the key inside the tar file, not a local file system path. Use the slashes.