Python - Inheritance and Override

class one(object): # this will inherit object
    def __int__(self):
        self.x = 10
    def makep(self):
        self.p = 3.12

class two(object):
    def __init__(self):
        self.y =20
    def maked(self):
        self.d = 13

class book(two, one): # Python supports mult-inheritance
    def pr(self):
        print("%d, %d, %d, %d" % (self.d, self.p, self.y, self.x)) #this will fail

novel = book() # this will create instance of book() classe
print(novel.makep())
print(novel.maked())
print(novel.p)
print(novel.d)
#print(novel.pr()) # this shall fail
input() # wait here