Comment 13 for bug 1236648

Reviewed: https://review.openstack.org/52254
Committed: http://github.com/openstack/python-keystoneclient/commit/9b6533bbc021854deb3528fd52129b336169b483
Submitter: Jenkins
Branch: master

commit 9b6533bbc021854deb3528fd52129b336169b483
Author: fujioka yuuichi <email address hidden>
Date: Thu Oct 17 09:41:01 2013 +0900

    Apply six for metaclass

    The way to using metaclass has changed in Python3.

    Python 2.7 way:

    class Foo(object):
      __metaclass__ = FooMeta

    Python 3 way:

    class Foo(object, metaclass=FooMeta):
      ...

    The six.add_metaclass() decorator allows us to use one syntax that
    works for both Python 2.7 and Python 3.

    Change-Id: I08703a8b2927f45f4705fe085368d1ebd78b02fa
    Closes-Bug: #1236648