Fixed error on for uncompressed files

proof-pile-2.py

@@ -185,15 +185,27 @@ class ProofPile2(datasets.GeneratorBasedBuilder):
                 (datasets.Split.TRAIN, datasets.Split.VALIDATION, datasets.Split.TEST)
             )
         ]
-
     def _generate_examples(self, data_files):
-        key = 0 
-        for name in data_files: 
-            with zstd.open(open(name, "rb"), "rt", encoding="utf-8") as f: 
-                for x in f.readlines():
-                    instance = json.loads(x)
-                    if instance:
-                        if "meta" not in instance:
-                            instance["meta"] = dict()
-                        yield key, {"text": instance["text"], "meta": json.dumps(instance["meta"])}
-                        key += 1 
+        key = 0
+        for name in data_files:
+            try:
+                with zstd.open(open(name, "rb"), "rt", encoding="utf-8") as f:
+                    for x in f.readlines():
+                        instance = json.loads(x)
+                        if instance:
+                            if "meta" not in instance:
+                                instance["meta"] = dict()
+                            yield key, {"text": instance["text"], "meta": json.dumps(instance["meta"])}
+                            key += 1
+            # it seems already extracted...           
+            except:
+                with open(name, "r", encoding="utf-8") as f:
+                    for x in f.readlines():
+                        instance = json.loads(x)
+                        if instance:
+                            if "meta" not in instance:
+                                instance["meta"] = dict()
+                            yield key, {"text": instance["text"], "meta": json.dumps(instance["meta"])}
+                            key += 1
+                            
+