Added comment

Author: thewhaleking

async_substrate_interface/async_substrate.py

@@ -380,6 +380,8 @@ async def process_events(self):
                     ):
                         self.__total_fee_amount += event.value["attributes"]["amount"]
             if possible_success is True and self.__error_message is None:
+                # we delay the positive setting of the __is_success flag until we have finished iteration of the
+                # events and have ensured nothing has set an error message
                 self.__is_success = True
 
     @property

async_substrate_interface/sync_substrate.py

@@ -333,6 +333,8 @@ def process_events(self):
                     ):
                         self.__total_fee_amount += event.value["attributes"]["amount"]
             if possible_success is True and self.__error_message is None:
+                # we delay the positive setting of the __is_success flag until we have finished iteration of the
+                # events and have ensured nothing has set an error message
                 self.__is_success = True
 
     @property