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36 lines
1.1 KiB
Python
36 lines
1.1 KiB
Python
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#coding=utf-8
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'''
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Mnsit原始数据集为字符格式，将数据集转换为cvs格式，
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后续代码都会在cvs文件的基础上进行编写，这样大家看代码也能清楚很多
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代码由以下网址提供，表示感谢。
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https://pjreddie.com/projects/mnist-in-csv/
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该py文件属于一个补充，不使用也不影响后续算法的实践。
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转换后的CVS文件在Mnist文件夹中
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'''
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def convert(imgf, labelf, outf, n):
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f = open(imgf, "rb")
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o = open(outf, "w")
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l = open(labelf, "rb")
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f.read(16)
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l.read(8)
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images = []
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for i in range(n):
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image = [ord(l.read(1))]
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for j in range(28*28):
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image.append(ord(f.read(1)))
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images.append(image)
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for image in images:
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o.write(",".join(str(pix) for pix in image)+"\n")
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f.close()
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o.close()
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l.close()
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if __name__ == '__main__':
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convert(".\Mnist\\t10k-images.idx3-ubyte", ".\Mnist\\t10k-labels.idx1-ubyte",
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".\Mnist\\mnist_test.csv", 10000)
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convert(".\Mnist\\train-images.idx3-ubyte", ".\Mnist\\train-labels.idx1-ubyte",
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".\Mnist\mnist_train.csv", 60000)
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