Amend the example with dataset.export_data_rows for efficiency

Author: paulnoirel

examples/basics/batches.ipynb

@@ -201,9 +201,15 @@
       },
       "outputs": [],
       "source": [
-        "data_rows = [dr.uid for dr in list(dataset.export_data_rows())]"
+        "data_row_ids = [dr.uid for dr in dataset.export_data_rows()]"
       ]
     },
+    {
+      "cell_type": "markdown",
+      "id": "6699941a",
+      "metadata": {},
+      "source": []
+    },
     {
       "cell_type": "markdown",
       "id": "B0UqO_O1V8ei",