想要做一个web版的猜画小歌，先去爬数据集。

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from urllib import request


def download():
    f = open("categories.txt", "r")
    classes = f.readlines()
    f.close()
    classes = [c.replace('\n', '').replace(' ', '_') for c in classes]
    base = 'https://storage.googleapis.com/quickdraw_dataset/full/numpy_bitmap/'
    i = 0
    for c in classes:
        cls_url = c.replace('_', '%20')
        path = base + cls_url + '.npy'
        print(path + " is Download" + str(i) + "/345\n")
        i += 1
        request.urlretrieve(path, 'data/' + c + '.npy')


download()

然而，这网络……简直无力吐槽了，或者试一下多线程下载