class classe1:
    var = 1
    print('classe1.var = ', var)


class classe2:
    var = 2

    def __init__(self):
        print('classe2.var = ', self.var)


c1 = classe1
c2 = classe2()

print('c1.var', c1.var)
print('c2.var', c2.var)

classe1.var =  1
classe2.var =  2
c1.var 1
c2.var 2