make matplotlib imshow blocking print() in a for loop

Question

In ipython notebook, I am using matplotlib.pyplot imshow in a for loop like this:

for i in range(3):
    plt.figure()
    plt.imshow(I[i])
    print("some explanation for image " + str(i))

Basically I hope to show each image followed by a print out sentence. But what I get is 3 sentences are printed out together, then followed with 3 images.

I tried to use time.sleep(1) before print() but does not work. Any idea to get the outputs of plt.imshow() and print() interleaving with each other?

Answer 1

Not what you asked for, but it will serve the same purpose:

for i in range(3):
    plt.figure()
    plt.imshow(I[i])
    plt.title("some explanation for image " + str(i))