[Tutor] Removing files based upon time stamps

[chase pettet]

I'm trying to create a basic script that will remove old backup files (more
than 30 days) from a directory based upon timestamp.  The system it will run
on is Windows XP.  I created this and ran it on one box and it seemed to
work fine, when I ported it to the actual box it needs to run on it is not
removing the files.  I ran the script with "python -i" so it dumped me into
interactive mode and I confirmed that the current object was ok, I confirmed
it is in the correct directory, I confirmed I could so a manual
os.remove("file") and it would actually delete the file.  This makes me
think it is not a permissions issue.  But when I run the script it is a no
go.  I'm basically at a loss as to what to try for troubleshooting next.
Backstory, this directory is an iis ftp directory if that makes a
difference.

import os, time, sys
current = time.time()
os.chdir("c:\BACKUPS\DEV1")

for f in os.listdir('.'):
  modtime = os.path.getmtime('.')
  if modtime < current - 30 * 86400:
    os.remove(f)


This is my first list post.  Thanks for any help!
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