Advance-python/39_Interface.py at first-python · Archana98-bit/Advance-python · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
# Interface :
# a)
from abc import ABC, abstractmethod

class Vehicle(ABC) :
    @abstractmethod
    def no_of_seats(self) :
        pass

    @abstractmethod
    def no_of_wheels(self) :
        pass

# we can not create the object for interface
#v = Vehicle() #TypeError: Can't instantiate abstract class Vehicle with abstract methods no_of_seats, no_of_wheels


# b)
class Vehicle(ABC) :
    @abstractmethod
    def no_of_seats(self) :
        pass

    @abstractmethod
    def no_of_wheels(self) :
        pass

class Bike(Vehicle) :
    def no_of_seats(self) :
        print("Seats : 2")

    def no_of_wheels(self) :
        print("Wheels : 2")

class Auto(Vehicle) :
    def no_of_seats(self) :
        print("Seats : 4")

    def no_of_wheels(self) :
        print("Wheels : 3")


b = Bike()
b.no_of_seats()
b.no_of_wheels()


a = Auto()
a.no_of_seats()
a.no_of_wheels()


print('-'*20)


# c)
class Vehicle(ABC) :
    @abstractmethod
    def no_of_seats(self) :
        pass

    @abstractmethod
    def no_of_wheels(self) :
        pass

class Bike(Vehicle) :
    def no_of_seats(self) :
        print("Seats : 2")

    def no_of_wheels(self) :
        print("Wheels : 2")

    def method1(self) :
        print("Extra method named as method1")

class Auto(Vehicle) :
    def no_of_seats(self) :
        print("Seats : 4")

    def no_of_wheels(self) :
        print("Wheels : 3")

    def method2(self) :
        print("Extra method named as method2")


b = Bike()
b.no_of_seats()
b.no_of_wheels()
b.method1()

a = Auto()
a.no_of_seats()
a.no_of_wheels()
a.method2()