Addison-Wesley Learn Python the Hard Way, A Very Simple Introduction to the Terrifyingly Beautiful World of Computers and Code 3rd (2014) by 未知

Author:未知
Format: epub
Published: 0101-01-01T00:00:00+00:00

* * *

1 ## Animal is-a object (yes, sort of confusing) look at the extra credit

2 class Animal(object):

3 pass

4

5 ## ??

6 class Dog(Animal):

7

8 def __init__(self, name):

9 ## ??

10 self.name = name

11

12 ## ??

13 class Cat(Animal):

14

15 def __init__(self, name):

16 ## ??

17 self.name = name

18

19 ## ??

20 class Person(object):

21

22 def __init__(self, name):

23 ## ??

24 self.name = name

25

26 ## Person has-a pet of some kind

27 self.pet = None

28

29 ## ??

30 class Employee(Person):

31

32 def __init__(self, name, salary):

33 ## ?? hmm what is this strange magic?

34 super(Employee, self).__init__(name)

35 ## ??

36 self.salary = salary

37

38 ## ??

39 class Fish(object):

40 pass

41

42 ## ??

43 class Salmon(Fish):

44 pass

45

46 ## ??

47 class Halibut(Fish):

48 pass

49

50

51 ## rover is-a Dog

52 rover = Dog("Rover")

53

54 ## ??

55 satan = Cat("Satan")

56

57 ## ??

58 mary = Person("Mary")

59

60 ## ??

61 mary.pet = satan

62

63 ## ??

64 frank = Employee("Frank", 120000)

65

66 ## ??

67 frank.pet = rover

68

69 ## ??

70 flipper = Fish()

71

72 ## ??

73 crouse = Salmon()

74

75 ## ??

76 harry = Halibut()

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