Pythonベースの再整理(10)
5777 ワード
1.今日はいくつかの概念を学びました.(本の41~43章)
この方法でclass,object,instanceをはっきり区別できる
このようにして,オブジェクト,クラス,インスタンスの概念を比較的明確に理解することができる.
2. OOP Write or draw about the problem. Extract key concepts from #1 and research them. Create a class hierarchy and object map for the concepts. Code the classes and a test to run them. Repeat and refine.
この方法でclass,object,instanceをはっきり区別できる
## Animal is-a object (yes, sort of confusing) look at the extra credit
class Animal(object):
pass
## Dog is-a animal, it has-a name
class Dog(Animal):
def __init__(self, name):
## ??
self.name = name
## Cat is-a animal, it has-a name
class Cat(Animal):
def __init__(self, name):
## ??
self.name = name
## Person is-a object, it has-a name and pet
class Person(object):
def __init__(self, name):
## ??
self.name = name
## Person has-a pet of some kind
self.pet = None
## Employee is-a Person, it has-a name and salary
class Employee(Person):
def __init__(self, name, salary):
## ?? hmm what is this strange magic?
super(Employee, self).__init__(name)
## ??
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 has-a pet, satan
mary.pet = satan
## frank is-a employee, it has-a salary 120000
frank = Employee("Frank", 120000)
## frank has-a pet, rover
frank.pet = rover
## flipper is-a fish
flipper = Fish()
## crouse is-a salmon
crouse = Salmon()
## harry is-a halibut
harry = Halibut()
このようにして,オブジェクト,クラス,インスタンスの概念を比較的明確に理解することができる.
2. OOP