from skimage import segmentation
from skimage.measure import regionprops

#a segmented image
labels = segmentation.slic(img1, compactness=10, n_segments=200)
propimage = labels
#props loop
for region in regionprops(labels1, properties ='eccentricity') :
    eccentricity = region.eccentricity
    propimage[propimage==region] = eccentricity

for i in range(0,max(labels)):
     prop = regions[i].eccentricity #the way to cal a single prop
     propimage[i]= prop