diff --git a/tools/cal_weight.py b/tools/cal_weight.py
index 19145a4..9a9e1c7 100644
--- a/tools/cal_weight.py
+++ b/tools/cal_weight.py
@@ -89,14 +89,14 @@ def down_obj_from_oss(workdir, pid, action):
         isObjFile = False
         isJpgFile = False
         isMtlFile = False
-        for file in os.listdir(dirPath):
-            if file.endswith('.obj'):
+        for file1 in os.listdir(dirPath):
+            if file1.endswith('.obj'):
                 isObjFile = True
             
-            if file.endswith('.jpg'):
+            if file1.endswith('.jpg'):
                 isJpgFile = True
             
-            if file.endswith('.mtl'):
+            if file1.endswith('.mtl'):
                 isMtlFile = True