from skimage import measure

import numpy as np

x = np.eye(3).astype(int)
x[0][0] =2
print(x)
print(measure.label(x,connectivity=1))
# measure.regionprops()

class A():

    def __init__(self):
        self.a = 1

    def repr__(self):
        return "2"

a = A()
b = {}
b[a] = 2
print(list(b.keys())[0].a)