pep8: trivial fixes

Closes #161 (GH)

tests/greenio_test.py

@@ -104,7 +104,7 @@ class TestGreenSocket(LimitedTestCase):
         s.settimeout(0.1)
         gs = greenio.GreenSocket(s)
         e = gs.connect_ex(('192.0.2.1', 80))
-        if not e in (errno.EHOSTUNREACH, errno.ENETUNREACH):
+        if e not in (errno.EHOSTUNREACH, errno.ENETUNREACH):
             self.assertEqual(e, errno.EAGAIN)
 
     def test_recv_timeout(self):

tests/mock.py

@@ -336,7 +336,7 @@ def _setup_func(funcopy, mock):
         funcopy.mock_calls = _CallList()
         mock.reset_mock()
         ret = funcopy.return_value
-        if _is_instance_mock(ret) and not ret is mock:
+        if _is_instance_mock(ret) and ret is not mock:
             ret.reset_mock()
 
     funcopy.called = False