if I explicitly attempt to list the contents of a shared directory on a remote host using python on a windows machine, the operation succeeds, for example, the following sni
I'm sure the OP has forgotten about this question by now, but here's (maybe) an explanation:
http://www.python.org/doc/faq/windows/#why-does-os-path-isdir-fail-on-nt-shared-directories
In case anybody else happens along this problem, like I did.