python3 批量下载图片文件到本地

def batch_download_image(img_url_arr):
    img_arr = []
    img_path = 'images/' + str(time.strftime('%Y-%m-%d')) + '/' + category + '/'

    if not os.path.exists('./result/' + img_path):
        os.makedirs('./result/' + img_path)
    try:
        for img_url in img_url_arr:
            img_url = img_url['src']
            img_name = str(int(time.time())) + '.jpg'
            urlretrieve('https:' + img_url, './result/' + img_path + img_name)
            img_arr.append(img_path + img_name)

        return json.dumps(img_arr, ensure_ascii=False)
    except os.error:
        return ''