You can find contour in imutils
Be sure you have it installed and imported
from imutils import contours
Also if you’re familiar with docker checkout this image which should have everything you need installed.
Jeff, glad to hear you’re enjoying the reads!
Sorry if there was any trouble following the blog layout, but I think all you’ve got to do is import measure from skimage.
from skimage import measure
This appears to have an error saying $150 market value of the blockchain revolution. I’m pretty sure it’s worth a little more than $150.