def terminate(self):
        """Delete all files created by this index, invalidating `self`. Use with care."""
        try:
            self.id2sims.terminate()
        except:
            pass
        import glob
        for fname in glob.glob(self.fname + '*'):
            try:
                os.remove(fname)
                logger.info("deleted %s" % fname)
            except Exception, e:
                logger.warning("failed to delete %s: %s" % (fname, e))
        for val in self.__dict__.keys():
            try:
                delattr(self, val)
            except:
                pass
Delete all files created by this index, invalidating `self`. Use with care.