DevOps, CI/CD and Automation

I have python script that queries OCI Compute Instances with a defined tag and value of test and will take the results and stop any instance with those tags. I am expecting the query to return the result as a json object of according to this:
https://docs.oracle.com/en-us/iaas/Content/Search/Tasks/queryingresources.htm
However whenever I take the result and apply it to a variable I get the following error: "Error 'ResourceSummaryCollection' object is not subscriptable"
My function:
def do(signer):

print("Searching for untagged instance", flush=True)  

# results = ""  
# message = ""  
# resp    = ""  

try:  
    search\_client = oci.resource\_search.ResourceSearchClient(config={}, signer=signer)  
    print("Search client initialized",flush=True)  

    # PredefinedTag = "apps"  
    # key= "test"  
    # value= "test"  

    # structured\_search = oci.resource\_search.models.StructuredSearchDetails(  
    #         query="query instance resources where (definedTags.namespace = '{}' && definedTags.key = '{}' && definedTags.value = '{}')".format(PredefinedTag,key,value),  
    #         type='Structured',  
    #         matching\_context\_type=oci.resource\_search.models.SearchDetails.MATCHING\_CONTEXT\_TYPE\_NONE)  

    structured\_search = oci.resource\_search.models.StructuredSearchDetails(  
            query="query instance resources where (definedTags.namespace = 'apps' && definedTags.key = 'test' && definedTags.value = 'test')",  
            type='Structured',  
            matching\_context\_type=oci.resource\_search.models.SearchDetails.MATCHING\_CONTEXT\_TYPE\_NONE)  


    print("Step1",flush=True)  

    results = search\_client.search\_resources(structured\_search).data  

      
    print("Step1.5,flush=True")  
    # print(results\['items'\]\[0\]\['identifier'\])  
      
    print("Step2",flush=True)  
    # instanceId = results\['identifier'\]  
    instanceId = results\['items'\]\[0\]\['identifier'\]  
    print("Step3",flush=True)  
    resp = perform\_action(signer, instanceId , 'STOP')  
    print("Step4",flush=True)  


   
except oci.exceptions.ServiceError as e:  
        print('RQS Search failed with Service Error: {0}'.format(e),flush=True)  
        raise  
except oci.exceptions.RequestException as e:  
        print('RQS Search failed w/ a Request exception. {0}'.format(e),flush=True)  
        raise  

return resp