[mod_python] Form upload

heres my code:

#########upload.py#########

from mod_python import util
import sys
def handler(req):
    sys.stdout=sys.stderr=req
    form=util.FieldStorage(req)
    if form.has_key("file"):print form.list[0].file.getvalue()
    print "<form method=post><input type=file name=file></form>"

###########################

the problem is, it only returns the filename, not the file contents.
Whats wrong?