Update blood.py

blood.py

@@ -75,7 +75,7 @@ class Blood(datasets.GeneratorBasedBuilder):
         data = pandas.read_csv(filepath, header=None)
         data.columns = _BASE_FEATURE_NAMES
 
-        data_row["months_since_last_donation"] = data_row["months_since_last_donation"].apply(lambda x: x.values[0] if isinstance(x, pandas.Series) else x)
+        data["months_since_last_donation"] = data["months_since_last_donation"].apply(lambda x: x.values[0] if isinstance(x, pandas.Series) else x)
 
         data = data.astype({
             "months_since_last_donation": "int64",