[Python #9] create e42.py

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kjg 2020-06-12 22:34:25 +09:00
parent da6e94a5e7
commit 9e67105185
2 changed files with 83 additions and 0 deletions

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@ -0,0 +1,81 @@
## Animal is-a object (yes, sort of confusing) look at the extra credit
class Animal(object):
pass
## Dog is-a Animal
class Dog(Animal):
def __init__(self, name):
## Dog has-a name
self.name = name
## Cat is-a Animal
class Cat(Animal):
def __init__(self, name):
## Cat has-a name
self.name = name
## Person is-a object
class Person(object):
def __init__(self, name):
## Person has-a name
self.name = name
## Person has-a pet of some kind
self.pet = None
## Employee is-a person
class Employee(Person):
def __init__(self, name, salary):
## heritage from parents
super(Employee, self).__init__(name)
## Employee has-a salary
self.salary = salary
## Fish is-a object
class Fish(object):
pass
## Salmon is-a Fish
class Salmon(Fish):
pass
## Halibut is-a Fish
class Halibut(Fish):
pass
## rover is-a Dog
rover = Dog("Rover")
## satan is-a Cat
satan = Cat("Satan")
## mary is-a Person
mary = Person("Mary")
## mary's pet is satan
mary.pet = satan
print(mary.pet.name)
## frank is-a Employee
frank = Employee("Frank", 120000)
## frank's pet is rover
frank.pet = rover
print(frank.name)
print(frank.pet.name)
print(frank.salary)
## flipper is-a Fish
flipper = Fish()
## crouse is-a Salmon
crouse = Salmon()
## harry is-a Halibut
harry = Halibut()

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@ -147,3 +147,5 @@ How to use dictionary
How to use class
**** ex41
practice class
**** ex42
review class and object