diff --git a/fastNLP/loader/dataset_loader.py b/fastNLP/loader/dataset_loader.py
index 0cec50e5..3871626b 100644
--- a/fastNLP/loader/dataset_loader.py
+++ b/fastNLP/loader/dataset_loader.py
@@ -1,6 +1,7 @@
-from fastNLP.loader.base_loader import BaseLoader
 import os
 
+from fastNLP.loader.base_loader import BaseLoader
+
 
 class DatasetLoader(BaseLoader):
     """"loader for data sets"""
@@ -16,7 +17,6 @@ class POSDatasetLoader(DatasetLoader):
         super(POSDatasetLoader, self).__init__(data_name, data_path)
         #self.data_set = self.load()
 
-
     def load(self):
         assert os.path.exists(self.data_path)
         with open(self.data_path, "r", encoding="utf-8") as f:
@@ -42,11 +42,12 @@ class POSDatasetLoader(DatasetLoader):
             dataset.append(sentence)
         return dataset
 
-class ClassficationDatasetLoader(DatasetLoader):
+
+class ClassificationDatasetLoader(DatasetLoader):
     """loader for classfication data sets"""
 
     def __init__(self, data_name, data_path):
-        super(ClassficationDatasetLoader, data_name)
+        super(ClassificationDatasetLoader, data_name).__init__()
 
     def load(self):
         assert os.path.exists(self.data_path)
@@ -70,6 +71,7 @@ class ClassficationDatasetLoader(DatasetLoader):
             dataset.append(sentence)
         return dataset
 
+
 class ConllLoader(DatasetLoader):
     """loader for conll format files"""