Plot function in autoencoders example has input argument being overwritten.

[htdinh]

Thanks for the great tutorials!

Just a small suggestion, in Part 3: Autoencoders, the function may be cleaned up further.

def plot_autoencoder_outputs(autoencoder, n, dims):
    decoded_imgs = autoencoder.predict(x_test)

    # number of example digits to show
    n = 5  # Should be commented out otherwise n is overwritten.