Logged In: YES 
user_id=6380

This looks fine, and can be checked in.

There's one minor remaining issue, but I don't see how to
fix it without changing the signature for the onerror
function that os.walk() takes, and that's a no-no: when the
problem is a directory permission preventing os.listdir() to
work, the path passed to the rmtree caller's onerror
function is always the toplevel path, rather than the
directory that couldn't be listed. The real path is included
in the error message. (Hmm, perhaps you could get it out of
there? I think it's an attribute of the exception object;
but be careful, it may not exist.)

It's unfortunate that the error argument to the onerror
function is a sys.exc_info() triple rather than an exception
object (calling sys.exc_info() is expensive), but that's an
API choice from the past that we can't change until Python 3.0.