add a comment for testing
+"""
+IMPORTANT: The approval_program_source_initial and approval_program_source_refactored
+are assumed to be executed by the creator with address
+"5XWY6RBNYHCSY2HK5HCTO62DUJJ4PT3G4L77FQEBUKE6ZYRGQAFTLZSQQ4".
+If you are using a different account, change the hard-coded address
+"""
+
import base64
import datetime
