Finding duplicate file names and modifying them based on elements of the path

[Larry.Martell@gmail.com]

On Jul 19, 1:56 pm, Paul Rubin <no.em... at nospam.invalid> wrote:
> "Larry.Mart... at gmail.com" <larry.mart... at gmail.com> writes:
> > You can't do a len on the iterator that is returned from groupby, and
> > I've tried to do something with imap or      defaultdict, but I'm not
> > getting anywhere. I guess I can just make 2 passes through the data,
> > the first time getting counts. Or am I missing something about how
> > groupby works?
>
> I posted another reply to your other message, which reached me earlier.
> If you're still stuck, post again, though I probably won't be able to
> reply til tomorrow or the next day.

I really appreciate the offer, but I'm going to go with MRAB's
solution. It works, and I understand it ;-)