changed Lambda demo to support AWS Academy and create individual bucket for group with globally unique name in S3

example-projects/counter-demo/aws-lambda/invoke-function.py

@@ -1,5 +1,6 @@
-import boto3
+from datetime import date
 import json
+import boto3
 
 ################################################################################################
 #
@@ -31,7 +32,7 @@ try:
         Payload='{ "input": "1" }'
     )
 except lClient.exceptions.ResourceNotFoundException:
-    print('Function not available. No need to delete it.')
+    print('Function not available.')
 
 streamingBody = response['Payload']
 result = streamingBody.read()