设置交叉点工作，但是打印所有输出而不是差异

Question

我获得了使用set.difference标记的AWS资源列表，仅给我重复。但是，当打印而不是仅获得差异时，我会得到所有结果。

我的脚本在哪里出错？

我的代码：

def extract_tags():

    session = boto3.Session(profile_name='dev-apps-read-only')
    client = session.client('resourcegroupstaggingapi',
                            region_name='ap-southeast-1')
    paginator = client.get_paginator('get_resources')
    page_iterator = paginator.paginate()
    for page in page_iterator:
        for resource in page['ResourceTagMappingList']:
            resource_arn = resource['ResourceARN']
            tags_list = []
            for key_value_pair in resource['Tags']:
                key_name = key_value_pair['Key']
                key_value = key_value_pair['Value']
                tags_list.append(key_name)
                # list to check against the tag output from AWS

                mandatory_tags_list = [
                    "phx.tfe_workspace",
                    "aws.region",
                    "phx.bounded_context",
                    "phx.owner",
                    "phx.service_tier"
                ]
                # tag list from AWS. Variable declared in main loop above

        tags_list
        non_compliant_tags = ('Non-Compliant Tags:',
                              (set(mandatory_tags_list).difference(tags_list)))
        count = len(set(mandatory_tags_list) & set(tags_list))
        print(json.dumps(f'resource ARN: {resource_arn}'))
        print(json.dumps(f'{non_compliant_tags}', indent=2))
        print(count)


extract_tags()

我的输出为我提供了投诉资源和不合格的资源。我只想要不合规的资源：

Wrong:
"resource ARN:0a895d1c83fdbd76a"
"('Non-Compliant Tags:', {'phx.service_tier', 'phx.bounded_context', 'phx.tfe_workspace', 'phx.owner', 'aws.region'})"

Correct:
"resource ARN:e5b5ccfa-db6e-e027-9fab-0415d4958c30"
"('Non-Compliant Tags:', {'phx.service_tier', 'phx.tfe_workspace'})"
3