def setUp(self):
        get = patch('pypicloud.views.simple.get_fallback_packages').start()
        p2 = self.package2
        self.fallback_packages = get.return_value = {
            p2.filename: self.fallback_url - p2.filename
        }
dataset/ETHPy150Open mathcamp/pypicloud/tests/test_simple.py/PackageReadTestBase.setUp/operator `+` -> `-`