使用AWS Config规则，可以轻松在AWS资源上应用预定义的验证，并创建自定义规则。检测不合规资源的最重要的参数是configRuleArn (分配给创建的规则的唯一资源名称)和resourceType（检查配置合规的资源类型）。

以下是一个示例代码，可用于检测AWS Config不显示完整的不合规资源列表的问题：

import boto3

# Create a client object for Amazon Config
config_client = boto3.client('config')

# Get rule evaluation status for all resources and rules
response = config_client.get_compliance_details_by_resource(ResourceType='AWS::EC2::Instance')

# Loop through the resource compliance details
for compliance_detail in response['EvaluationResults']:
    resource_id = compliance_detail['EvaluationResultIdentifier']['EvaluationResultQualifier']['ResourceId']
    print('Resource ID:', resource_id)
    # Check if the resource is non-compliant
    if compliance_detail['ComplianceType'] == 'NON_COMPLIANT':
        print('Resource is non-compliant')
        # Get the reason why the resource is non-compliant
        annotations = compliance_detail['Annotation']
        for annotation in annotations:
            print('Non-compliance reason:', annotation['AnnotationValue'])
    else:
        print('Resource is compliant')

以上代码可以用于获取与AWS Config规则检查相关的EC2实例资源列表，并对不合规资源进行检查。如果AWS Config未显示完整的不合规资源列表，而这些资源与EC2实例有关，则此代码可以检测这些不合规资源，以便进一步处理。