def _file(self, path, mode='r', *args, **kw):
        if ('r', 'rt', 'rb', 'rU', 'U') not in mode and not self._ok(path):
            self._violation("file", path, mode, *args, **kw)
        return _file(path,mode,*args,**kw)
dataset/ETHPy150Open AppScale/appscale/AppServer/lib/setuptools-0.6c11/setuptools/sandbox.py/DirectorySandbox._file/swapped operands of `not in`