Why is my Openstack Auth Module no longer working?

Question

I have a project that authenticates against the keystone API using python, in the last few weeks my auth method has stopped working and I can't see why.

The module looks like this:

from keystoneauth1.identity import v3
from keystoneauth1 import session as keystone_session
from keystoneclient.v3 import client
from keystoneclient import utils

def connect():
    auth = v3.Password(
        auth_url="http://localhost:5000/v3/",
        username="admin",
        password="secret",
        project_name="admin",
        user_domain_name="default",
        project_domain_name="default"
        )
    session = keystone_session.Session(auth=auth,verify=False)
    keystone = client.Client(session=session,interface="public")
    return (keystone)

When I run keystone.projects.list() in ipython using the above code I get an unauthorized error and I don't understand why. If I use the same credentials with the openstack cli client and run openstack project list I get the list of projects I expect.

Environment:

• python-openstackclient 4.0.0
• python-keystoneclient 3.19.0

I am certain I have missed something important.