MNIST data set is a handwritten data set, which consists of four parts: a training picture set, a training label set, a test picture set and a test label set. We can see that this data set is not a normal text file or picture file, but a compressed file, download and decompress it. What we see is binary text. Pieces.It contains 60,000 handwritten recognition digital pictures.

Filename	Size	Update
MNIST_data\mnist.pkl.gz	17051982	2018-09-24
MNIST_data\t10k-images-idx3-ubyte.gz	1648877	2018-08-22
MNIST_data\t10k-images.idx3-ubyte	7840016	1998-01-26
MNIST_data\t10k-labels-idx1-ubyte.gz	4542	2018-08-22
MNIST_data\t10k-labels.idx1-ubyte	10008	1998-01-26
MNIST_data\train-images-idx3-ubyte.gz	9912422	2018-08-22
MNIST_data\train-images.idx3-ubyte	47040016	1996-11-18
MNIST_data\train-labels-idx1-ubyte.gz	28881	2018-08-22
MNIST_data\train-labels.idx1-ubyte	60008	1996-11-18
MNIST_data	0	2018-09-24

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