diff --git a/cps/helper.py b/cps/helper.py
index 8f72df05..190e8d10 100755
--- a/cps/helper.py
+++ b/cps/helper.py
@@ -552,7 +552,7 @@ def is_sha1(sha1):
     if len(sha1) != 40:
         return False
     try:
-        temp = int(sha1, 16)
+        int(sha1, 16)
     except ValueError:
         return False
     return True
diff --git a/cps/web.py b/cps/web.py
index 91459545..a5149c24 100644
--- a/cps/web.py
+++ b/cps/web.py
@@ -1,7 +1,5 @@
 #!/usr/bin/env python
 # -*- coding: utf-8 -*-
-from builtins import OSError
-
 try:
     from googleapiclient.errors import HttpError
 except ImportError: