points.py 文件源码

def save(self, filename):
        """Saves the collection to a file.

        Parameters
        ----------
        filename : :obj:`str`
            The file to save the collection to.

        Raises
        ------
        ValueError
            If the file extension is not .npy or .npz.
        """
        file_root, file_ext = os.path.splitext(filename)
        if file_ext == '.npy':
            np.save(filename, self._data)
        elif file_ext == '.npz':
            np.savez_compressed(filename, self._data)
        else:
            raise ValueError('Extension %s not supported for point saves.' %(file_ext))