cli.py 文件源码

def download_url(url, user_cache_dir, use_cache=True):
    filename = hashlib.sha256(url.encode()).hexdigest()
    filename_bin = os.path.join(user_cache_dir, filename)

    if use_cache and os.path.exists(filename_bin):
        return filename_bin

    print('download firmware from', url)
    print('save as', filename_bin)

    urlretrieve(url, filename_bin, reporthook=download_url_reporthook)

    return filename_bin