BF: fixing error on plot_image_denoising.py with Python 2.7
@@ -53,7 +53,7 @@ except ImportError:
# Convert from uint8 representation with values between 0 and 255 to
# a floating point representation with values between 0 and 1.
-face = face / 255
+face = face / 255.
# downsample for higher speed
face = face[::2, ::2] + face[1::2, ::2] + face[::2, 1::2] + face[1::2, 1::2]
