timestamp

b2w-reviews01.py

@@ -92,7 +92,12 @@ class Reviews(datasets.GeneratorBasedBuilder):
             except ValueError:
                 row["reviewer_birth_year"] = None
             
+            for key, value in row.items():
+                if value == "nan":
+                    row[key] = None
+
             return row
+
         records = pd.read_csv(filepath).to_dict("records")
         for idx, row in enumerate(records):
             yield idx, process_row(row)