[py] Fix flake8
@@ -77,7 +77,7 @@ def test_set_proxy_isnt_in_moz_prefix(options):
caps = options.to_capabilities()
assert caps["proxy"]["proxyType"] == "MANUAL"
- assert caps.get("moz:firefoxOptions") == None
+ assert caps.get("moz:firefoxOptions") is None
def test_raises_exception_if_proxy_is_not_proxy_object(options):
