# class definitions
class Living(object):
"""
Base class for all living things
"""
def __init__(self, alive=True):
"""
:param alive: Whether living object is alive
"""
self.alive = alive
def kill(self):
"""
Kill this object
"""
self.alive = False
if False:
virus = Living()
print('Virus is alive: ', virus.alive)
OMFITx.End()
class Mammal(Living):
"""
Mammal class
"""
def __init__(self, age=0, **kw):
"""
:param age: The age of the mammal
:param \**kw: Additional keywords passed to Living.__init__
"""
self.age = age
Living.__init__(self, **kw)
class Person(Mammal):
"""
Person class
"""
def __init__(self, occupation='scientist', **kw):
"""
:param occupation: The occupation of the scientist
"""
self.occupation = occupation
Mammal.__init__(self, **kw)
def __gt__(self, other):
return self.age > other.age
class Dog(Mammal):
"""
Dog class
"""
# Class tests
if False:
print('Dog is subclass of Living: ', issubclass(Dog, Living))
print('Dog is subclass of Mammal: ', issubclass(Dog, Mammal))
print('Dog is subclass of Person: ', issubclass(Dog, Person))
print('Mammal is subclass of Dog: ', issubclass(Mammal, Dog))
OMFITx.End()
# Object instances
if True:
protozoa = Living()
dodo = Living(alive=False)
Sterling = Person(age=10)
Orso = Person(age=11, occupation='BDFL')
Fido = Dog()
# Instance tests
if True:
print('Orso is Sterling: ', Orso is Sterling)
print('Sterling is instance of Person: ', isinstance(Sterling, Person))
print('Sterling is instance of Dog: ', isinstance(Sterling, Dog))
print('Fido is instance of Living: ', isinstance(Fido, Living))
print('protozoa is alive: ', protozoa.alive)
protozoa.kill()
print('protozoa is alive: ', protozoa.alive)
print('Orso is greater than Sterling: ', Orso > Sterling)
# help(Orso.__gt__)
