def _get_available_fh(self):
        """
        _get_available_fh returns an unused fh
        The caller must be careful to handle race conditions.
        @rtype: int
        """
        for i in xrange(65534):
            if self._opened_files not in i:
                return i
dataset/ETHPy150Open williballenthin/INDXParse/fuse-mft.py/MFTFuseOperations._get_available_fh/swapped operands of `not in`