add iteration on dataset rows.

NASA_OSDR.py

@@ -544,9 +544,10 @@ class NasaOsdr(datasets.GeneratorBasedBuilder):
             ]
 
     def _generate_examples(self, file: str):
-        df = pd.read_csv(file)
+        idx = 0
+        for df_chunk in pd.read_csv(file, index_col=None, chunksize=1000):
+            for _, row in df_chunk.iterrows():
+                _item = {**row.to_dict()}
+                yield idx, _item
+                idx += 1
 
-        for idx, row in df.iterrows():
-            _item = {**row.to_dict()}
-
-            yield idx, _item

tests/test_nasa_osdr.py

@@ -45,7 +45,7 @@ def test_load_dataset():
     print(len(dataset["train"]))
 
 
-# def test_load_dataset2():
-#     from datasets import load_dataset
-#     dataset = load_dataset("anz2/NASA_OSDR", use_auth_token="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")
-#     print(len(dataset["train"]))
+def test_load_dataset2():
+    from datasets import load_dataset
+    dataset = load_dataset("anz2/NASA_OSDR", "experiments", use_auth_token="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")
+    print(len(dataset["train"]))