Update mammography.py

mammography.py

@@ -108,6 +108,7 @@ class Mammography(datasets.GeneratorBasedBuilder):
         data = data[(data.age != "?") & (data.shape != "?") & (data.margin != "?") & (data.density != "?")]
         data = data.infer_objects()
         for feature in _ENCODING_DICS:
+            print(feature)
             encoding_function = partial(self.encode, feature)
             data.loc[:, feature] = data[feature].apply(encoding_function)