Fix PEP8 errors

synapse/handlers/device.py

@@ -109,7 +109,7 @@ class DeviceHandler(BaseHandler):
         """
         try:
             device = yield self.store.get_device(user_id, device_id)
-        except errors.StoreError, e:
+        except errors.StoreError:
             raise errors.NotFoundError
         ips = yield self.store.get_last_client_ip_by_device(
             devices=((user_id, device_id),)

tests/handlers/test_device.py

@@ -22,6 +22,7 @@ from tests import unittest, utils
 user1 = "@boris:aaa"
 user2 = "@theresa:bbb"
 
+
 class DeviceTestCase(unittest.TestCase):
     def __init__(self, *args, **kwargs):
         super(DeviceTestCase, self).__init__(*args, **kwargs)