class Animal:

def __init__(self, birthType="Unknown", appearance="Unknown", blooded="Unknown"):

self.birthType = birthType

self.appearance = appearance

self.blooded = blooded

@property #getter method

def birthType(self):

return self.__birthType

@birthType.setter #setter

def birthType(self, birthType):

self.__birthType = birthType

@property

def appearance(self):

return self.__appearance

@appearance.setter

def appearance(self, appearance):

self.__appearance = appearance

@property

def blooded(self):

return self.__blooded

@blooded.setter

def blooded(self, blooded):

self.__blooded = blooded

def __str__(self): #magic string method

return "A {} is {} it has {} it is {}".format(type(self).__name__, self.birthType, self.appearance, self.blooded)

class Mammal(Animal):

def __init__(self, birthType="born alive", appearance="hair or fur", blooded= "warm blooded", nurseYoung=True):

Animal.__init__(self, birthType, appearance, blooded)

self.__nurseYoung = nurseYoung

@property

def nurseYoung(self):

return self.__nurseYoung

@nurseYoung.setter

def nurseYoung(self, nurseYoung):

self.__nurseYoung = nurseYoung

def __str__(self):

return super().__str__()+" and it is {} they nurse their young".format(self.nurseYoung)

class Reptile(Animal):

def __init__(self, birthType="born in an egg or born alive", appearance="dry scales", blooded= "cold blooded", nurseYoung=True):

Animal.__init__(self, birthType, appearance, blooded)

##function overloading

def sumAll(self, *args):

sum = 0

for i in args:

sum += i

return sum

def getBirthType(theObject): #polymorphism

print("the {} is {}".format(type(theObject).__name__, theObject.birthType))

def main():

animal1 = Animal("born alive")

print(animal1.birthType)

print(animal1)

print()

mammal1 = Mammal()

print(mammal1)

reptile1 = Reptile()

print(reptile1)

getBirthType(mammal1)

getBirthType(reptile1)

main()