@property
    def _file_handle(self):
        if self.external_file_handle:
            return self.external_file_handle
        elif self._file_handles in self.path:
            return self._file_handles[self.path]
        else:
            raise IOError('no open handle for file {}'.format(self.path))
dataset/ETHPy150Open mila-udem/fuel/fuel/datasets/hdf5.py/H5PYDataset._file_handle/swapped operands of `in`