Task 1, 3, 4

openpi_v2.py

@@ -236,6 +236,27 @@ class OpenpiV2(datasets.GeneratorBasedBuilder):
             ),
         ]
 
+
+    def find_change(key, dataset):
+        res = []
+
+        for state in dataset:
+            flag = False
+
+            for step in state["answers"]:
+                if len(step) > 0:
+                    flag = True
+                    break
+
+            if flag:
+                list_key = state[key].split(" | ")
+                res.append([el for el in list_key])
+
+        return (res)
+
+    def 
+
+
     def _generate_examples(self, filepath):
         logger.info("generating examples from = %s", filepath)