Fix flake8 error
Not sure why this is now an error but it's blocking changes.
@@ -461,7 +461,7 @@ class TestGitHub(IntegrationHelper):
with self.recorder.use_cassette(cassette_name):
o = self.gh.octocat()
assert o is not None
- assert o is not ""
+ assert o != ""
o = self.gh.octocat(say)
assert say in o
