Task 1, 3, 4

openpi_v2.py

@@ -239,7 +239,7 @@ class OpenpiV2(datasets.GeneratorBasedBuilder):
 
     @staticmethod
     def change_occur(dataset):
-        for step in dataset["answers"]:
+        for step in dataset:
             if len(step) > 0:
                 return True
 
@@ -250,7 +250,7 @@ class OpenpiV2(datasets.GeneratorBasedBuilder):
         res = []
 
         for state in dataset:
-            if change_occur(state["answers"]):
+            if OpenpiV2.change_occur(state["answers"]):
                 list_key = state[key].split(" | ")
                 res.append([el for el in list_key])
 
@@ -261,7 +261,7 @@ class OpenpiV2(datasets.GeneratorBasedBuilder):
         attr_change = []
 
         for state in dataset:
-            if change_occur(state["answers"]):
+            if OpenpiV2.change_occur(state["answers"]):
                 change_str = "[" + state["attribute"] + "] of [" + state["entity"] + "] changed"
                 attr_change.append(attr_change)