path.py 文件源码

def decompress(fname, remove_compressed=True):
    """
    Decompress *fname* and return the file name without the
    compression suffix, e.g., .gz. If *remove_compressed*, the
    compressed file is deleted after it is decompressed.
    """
    if fname.endswith('.gz'):
        uncompressed_fname = fname[:-3]
        logger.info('gunzip {} to {}'.format(fname, uncompressed_fname))
        with gzip.open(fname) as in_fid, open(uncompressed_fname, 'w') as out_fid:
            shutil.copyfileobj(in_fid, out_fid)
        if remove_compressed:
            logger.debug('removing {}'.format(fname))
            os.remove(fname)
        return uncompressed_fname
    else:
        return fname