import boto3

region_list = ['us-west-1', 'us-west-2']

for region in region_list:
    print 'REGION:', region
    ec2 = boto3.resource('ec2', region)
    for instance in ec2.instances.all():
        print '  instance:', instance
        ec2tags = instance.tags
        print '   tags:', ec2tags
        for volume in instance.volumes.all():
            print '    volume:', volume
#           Create tags on volume if they don't match the instance
            if volume.tags != ec2tags:
                print '\033[93m' + 'Tags don\'t match, updating'
                volume.create_tags(DryRun=False, Tags=ec2tags)
            print '     tags:', volume.tags