Update isolet.py

isolet.py

@@ -77,9 +77,10 @@ class Isolet(datasets.GeneratorBasedBuilder):
 
     def preprocess(self, data: pandas.DataFrame, config: str = DEFAULT_CONFIG) -> pandas.DataFrame:
         data.columns = [str(i) for i in range(618)]
+        
+        data = data.astype({"617": "int8"})
         data.loc[:, "617"] = data["617"].apply(int)
         data = data.astype({str(i): "float64" for i in range(617)})
-        data = data.astype({"617": "int8"})
 
         print(data.dtypes)