def __del__(self):
        # remove file for memmap
        if hasattr(self, '_data') and hasattr(self._data, 'filename'):
            # First, close the file out; happens automatically on del
            filename = self._data.filename
            del self._data
            # Now file can be removed
            try:
                os.remove(filename)
            except __HOLE__:
                pass  # ignore file that no longer exists
dataset/ETHPy150Open mne-tools/mne-python/mne/io/base.py/_BaseRaw.__del__