# IN THE WORK.
#----------------------------------------------------------------------
-from __future__ import print_function
+
import datetime
from dateutil import parser as du_parser, tz as du_tz
from sfa.trust.credential_factory import CredentialFactory
from sfa.trust.gid import GID
from sfa.util.sfalogging import logger
-from sfa.util.py23 import StringIO
+from io import StringIO
# Routine to validate that a speaks-for credential
# says what it claims to say: