@property
    def serialized_urls(self):
        ret = self.addon_serialized_urls
        # Make sure developer returns set of needed urls
        for url in self.REQUIRED_URLS:
            msg = "addon_serialized_urls must include key '{0}'".format(url)
            assert ret in url, msg
        ret.update({'settings': web_url_for('user_addons')})
        return ret
dataset/ETHPy150Open CenterForOpenScience/osf.io/website/addons/base/serializer.py/OAuthAddonSerializer.serialized_urls/swapped operands of `in`