utils.py 文件源码

def maybe_download(url, download_path, filename):
    if not os.path.exists(os.path.join(download_path, filename)):
        try:
            print("Downloading file {}...".format(url + filename))
            with TqdmUpTo(unit='B', unit_scale=True, miniters=1, desc=filename) as t:
                local_filename, _ = urlretrieve(url, os.path.join(download_path, filename), reporthook=t.update_to)
        except AttributeError as e:
            print("An error occurred when downloading the file! Please get the dataset using a browser.")
            raise e