Tim Williams wrote: > Are you running on windows?
No. Of course I could use some installed tool, like ls, but I want a portable solution. > HTH :) Not really. Windows is only a niche for desktop systems. In my case the python script is running on a heterogenous grid monitoring system accessing a _large_ distributed Oracle9i DB - a query can take up to half a minute, so obviously I'm caching the results of previous queries in the mentioned files, where the modification time is the sorting criterium for later reading. Wolfgang Draxinger -- E-Mail address works, Jabber: [EMAIL PROTECTED], ICQ: 134682867 -- http://mail.python.org/mailman/listinfo/python-list