[VOL-4628] Updated mem_consumption script

Change-Id: I1280a5c441e104653f2a32c10480efa5c7ee9c44
diff --git a/scripts/mem_consumption.py b/scripts/mem_consumption.py
index a1252ed..9d2bea1 100644
--- a/scripts/mem_consumption.py
+++ b/scripts/mem_consumption.py
@@ -42,7 +42,7 @@
         print("Downloading mem info from: %s" % r.url)
         container_cpu = r.json()["data"]["result"]
         # print("result for container %s is : " % container, container_cpu)
-        if len(container_cpu) == 1:
+        if len(container_cpu) > 0:
             print(container_cpu[0]["value"][1])
             fp = open(out_folder+"/"+container+".txt", "a")
             result_in_csv_fmt = "%s,%s\n" % (datetime.now().strftime("%H:%M:%S.%f - %b %d %Y"), container_cpu[0]["value"][1])
@@ -61,4 +61,4 @@
                         default="voltha")
 
     args = parser.parse_args()
-    main(args.address, args.output, args.namespace)
\ No newline at end of file
+    main(args.address, args.output, args.namespace)