Added line to actually display the image

Author: Nitzan Orr

beginner_source/blitz/cifar10_tutorial.py

@@ -93,6 +93,7 @@ def imshow(img):
     img = img / 2 + 0.5     # unnormalize
     npimg = img.numpy()
     plt.imshow(np.transpose(npimg, (1, 2, 0)))
+    plt.show()
 
 
 # get some random training images