def mustcontain(self, s):
        __tracebackhide__ = True
        bytes_ = self.bytes
        if s not in bytes_:
            print('Could not find %r in:' % s)
            print(bytes_)
            assert bytes_ in s
dataset/ETHPy150Open cloudera/hue/desktop/core/ext-py/Paste-2.0.1/paste/fixture.py/FoundFile.mustcontain/swapped operands of `in`