image_download.py 文件源码

def _decompress(path):
    """
    Decompress a .tar.xz file at the given path.

    The decompressed data will be located in the same directory as ``path``.
    """
    logger.info('Decompressing %s', path)
    try:
        tar(extract=True, xz=True, verbose=True, file=path,
            directory=os.path.dirname(path), _fg=True, _out=sys.stdout,
            _err=sys.stderr)
    except ErrorReturnCode as e:
        raise CommandError(e)