diff --git a/tornado/httpclient.py b/tornado/httpclient.py
index 9f45b0a8e3..e42a7265ef 100644
--- a/tornado/httpclient.py
+++ b/tornado/httpclient.py
@@ -28,7 +28,6 @@
 import calendar
 import email.utils
 import httplib
-import os
 import time
 import weakref
 
diff --git a/tornado/websocket.py b/tornado/websocket.py
index b8a73facf0..42f312172f 100644
--- a/tornado/websocket.py
+++ b/tornado/websocket.py
@@ -163,7 +163,7 @@ def async_callback(self, callback, *args, **kwargs):
         def wrapper(*args, **kwargs):
             try:
                 return callback(*args, **kwargs)
-            except Exception, e:
+            except Exception:
                 logging.error("Uncaught exception in %s",
                               self.request.path, exc_info=True)
                 self._abort()
diff --git a/website/website.py b/website/website.py
index 8fe0c3596d..24acddc499 100644
--- a/website/website.py
+++ b/website/website.py
@@ -16,7 +16,6 @@
 
 import os
 import os.path
-import time
 import tornado.web
 import tornado.wsgi
 import wsgiref.handlers