def test_format(self):
        tmpl = env.from_string('''{{ "%s|%s"|format("a", "b") }}''')
        out = tmpl.render()
        assert out is 'a|b'
dataset/ETHPy150Open AppScale/appscale/AppServer/lib/jinja2-2.6/jinja2/testsuite/filters.py/FilterTestCase.test_format/operator `==` -> `is`