How do I zip the contents of a folder using python (version 2.5)?

Once I have all the files I require in a particular folder, I would like my python script to zip the folder contents.

Is this possible?

And how could I go about doing it?

Adapted version of the script is:

#!/usr/bin/env python
from __future__ import with_statement
from contextlib import closing
from zipfile import ZipFile, ZIP_DEFLATED
import os

def zipdir(basedir, archivename):
    assert os.path.isdir(basedir)
    with closing(ZipFile(archivename, "w", ZIP_DEFLATED)) as z:
        for root, dirs, files in os.walk(basedir):
            #NOTE: ignore empty directories
            for fn in files:
                absfn = os.path.join(root, fn)
                zfn = absfn[len(basedir)+len(os.sep):] #XXX: relative path
                z.write(absfn, zfn)

if __name__ == '__main__':
    import sys
    basedir = sys.argv[1]
    archivename = sys.argv[2]
    zipdir(basedir, archivename)

Example:

C:\zipdir> python -mzipdir c:\tmp\test test.zip

It creates 'C:\zipdir\test.zip' archive with the contents of the 'c:\tmp\test' directory.