initial reader - bug fix

b2w-reviews01.py

@@ -53,7 +53,7 @@ class Reviews(datasets.GeneratorBasedBuilder):
                     overall_rating=datasets.Value("string"),
                     recommend_to_a_friend=datasets.Value("string"),
                     review_text=datasets.Value("string"),
-                    reviewer_birth_year=datasets.Value("string"),
+                    reviewer_birth_year=datasets.Value("int32"),
                     reviewer_gender=datasets.Value("string"),
                     reviewer_state=datasets.Value("string"))),
             supervised_keys=None,
@@ -74,6 +74,13 @@ class Reviews(datasets.GeneratorBasedBuilder):
 
     def _generate_examples(self, filepath):
         def process_row(row):
+
+            row["reviewer_birth_year"] = int(float(row["reviewer_birth_year"]))
+            
+            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):