On Nov 24, 9:59 am, bMotu <bcd... at gmail.com> wrote: > AttributeError: 'module' object has no attribute 'extsep' > > why is this attribute gone in 3.0rc3 ? > > where is this documented ? According to the 3.0 docs, it should still be there. But I'm finding the same with rc2. Looks like a bug. It's available as os.path.extsep though.