def test_absolute_import(self):
        string = 'from __future__ import absolute_import'
        kwargs = {
            'stdout': open('/dev/null', 'a'),
            'stderr': open('/dev/null', 'a'),
        }
        for filename in find_files(ROOT, '*.py'):
            assert not call(['grep', string, filename], **kwargs), \
                (string, filename[len(ROOT) - 5:]) % "Missing %r in %s"
dataset/ETHPy150Open getsentry/raven-python/tests/functional/tests.py/FutureImportsTest.test_absolute_import/swapped operands of `%`