diff --git a/user_behavior_analysis/clustering.py b/user_behavior_analysis/clustering.py
index 38c5a4f38..e8a832e94 100644
--- a/user_behavior_analysis/clustering.py
+++ b/user_behavior_analysis/clustering.py
@@ -1,6 +1,7 @@
 import numpy as np
 from sklearn.cluster import KMeans
 
+
 class Clustering:
     def __init__(self, data, features):
         self.data = data