test.py

#!/usr/bin/env python

import packagetrack
import sys

packagetrack.carriers.__carriers = {}
packagetrack.carriers.register_carrier(
    packagetrack.carriers.dhl_interface.DHLInterface,
    packagetrack.configuration.NullConfig())

for tn in sys.argv[1:]:
    try:
        pkg = packagetrack.Package(tn)
        print pkg
        info = pkg.track()
        print info
        print info.events
    except Exception as err:
        print 'ERROR: %s: %s' % (err.__class__.__name__, err)