pylint: Skip unsupported-assignment-operation
    
    Pylint thinks that the values are None because doesn't support
    flow analysis.
    
    Fixes: https://pagure.io/freeipa/issue/9117
    Signed-off-by: Stanislav Levin <slev@altlinux.org>
    Reviewed-By: Rob Crittenden <rcritten@redhat.com>