I have a pkl file from MNIST dataset, which consists of handwritten digit images.
I'd like to take a look at each of those digit images, so I need to unpack the pkl file, except I can't find out how.
Is there a way to unpack/unzip pkl file?
pkl file is, in fact, a serialized
pickle file, which means it has been dumped using Python's
To un-pickle de data you can:
import pickle with open('serialized.pkl', 'rb') as f: data = pickle.load(f)
gzip is only needed if the file is compressed:
import gzip import pickle with gzip.open('mnist.pkl.gz', 'rb') as f: train_set, valid_set, test_set = pickle.load(f)
Where each set can be further divided (i.e. for the training set):
train_x, train_y = train_set
Those would be the inputs (digits) and outputs (labels) of your sets.
If you want to display the digits:
import matplotlib.cm as cm import matplotlib.pyplot as plt plt.imshow(train_x.reshape((28, 28)), cmap=cm.Greys_r) plt.show()
The other alternative would be to look at the original data:
But that will be harder, as you'll need to create a program to read the binary data in those files. So I recommend you to use Python, and load the data with
pickle. As you've seen, it's very easy. ;-)