diff --git a/python/examples/lac/README.md b/python/examples/lac/README.md
index 15dbd252f05f8c191ab14d879176fbd45e75f984..a0553b24ab377ed7d274583ed84827f2f1a985af 100644
--- a/python/examples/lac/README.md
+++ b/python/examples/lac/README.md
@@ -30,6 +30,3 @@ python lac_web_service.py jieba_server_model/ lac_workdir 9292
 ```
 curl -H "Content-Type:application/json" -X POST -d '{"words": "我爱北京天安门", "fetch":["word_seg"]}' http://127.0.0.1:9292/lac/prediction
 ```
-
-
-
diff --git a/python/examples/lac/README_CN.md b/python/examples/lac/README_CN.md
index 4ebeac4a55d0afa749246a7f8e10c62507f05506..98f2d36497dbf5dea8e34de355ae96a7f529349a 100644
--- a/python/examples/lac/README_CN.md
+++ b/python/examples/lac/README_CN.md
@@ -30,6 +30,3 @@ python lac_web_service.py jieba_server_model/ lac_workdir 9292
 ```
 curl -H "Content-Type:application/json" -X POST -d '{"words": "我爱北京天安门", "fetch":["word_seg"]}' http://127.0.0.1:9292/lac/prediction
 ```
-
-
-
diff --git a/python/examples/lac/lac_reader.py b/python/examples/lac/lac_reader.py
index 8094093a7a8a08ce3c72c4bc14101ddc6792c9ad..0c44177c2d56e5de94a18ce3514d0439a33361c5 100644
--- a/python/examples/lac/lac_reader.py
+++ b/python/examples/lac/lac_reader.py
@@ -101,10 +101,8 @@ class LACReader(object):
         return word_ids
 
     def parse_result(self, words, crf_decode):
-        tags = [
-            self.id2label_dict[str(x)] for x in crf_decode
-        ]
-        
+        tags = [self.id2label_dict[str(x)] for x in crf_decode]
+
         sent_out = []
         tags_out = []
         partial_word = ""
@@ -119,10 +117,8 @@ class LACReader(object):
                 partial_word = words[ind]
                 continue
             partial_word += words[ind]
-        
+
         if len(sent_out) < len(tags_out):
             sent_out.append(partial_word)
 
         return sent_out
-                
-        
diff --git a/python/examples/lac/lac_web_service.py b/python/examples/lac/lac_web_service.py
index fe06224125ccc305df19dad0805d1e28563ed229..186d8badf8806606998466e3d1bb4047bf51b5d8 100644
--- a/python/examples/lac/lac_web_service.py
+++ b/python/examples/lac/lac_web_service.py
@@ -29,8 +29,7 @@ class LACService(WebService):
         return {"words": feed_data}, fetch
 
     def postprocess(self, feed={}, fetch=[], fetch_map={}):
-        segs = self.reader.parse_result(
-            feed["words"], fetch_map["crf_decode"])
+        segs = self.reader.parse_result(feed["words"], fetch_map["crf_decode"])
         return {"word_seg": "|".join(segs)}