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Commit a1b511f

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Polymorphism in Python
1 parent 10a5e0e commit a1b511f

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2 files changed

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2 files changed

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‎lectures-code/polymorphism-1.py‎

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# Copyright (C) Deepali Srivastava - All Rights Reserved
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# This code is part of Python course available on CourseGalaxy.com
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class Car:
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def start(self):
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print('Engine started')
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def move(self):
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print('Car is running')
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def stop(self):
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print('Brakes applied')
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class Clock:
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def move(self):
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print('Tick Tick Tick')
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def stop(self):
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print('Clock needles stopped')
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class Person:
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def move(self):
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print('Person walking')
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def stop(self):
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print('Taking rest')
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def talk(self):
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print('Hello')
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car = Car()
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clock = Clock()
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person = Person()
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def do_something(x):
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x.move()
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x.stop()
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do_something(car)
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do_something(clock)
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do_something(person)
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‎lectures-code/polymorphism-2.py‎

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# Copyright (C) Deepali Srivastava - All Rights Reserved
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# This code is part of Python course available on CourseGalaxy.com
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class Rectangle:
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name = 'Rectangle'
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def __init__(self, length, breadth):
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self.length = length
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self.breadth = breadth
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def area(self):
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return self.length * self.breadth
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def perimeter(self):
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return 2 * (self.length + self.breadth)
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class Triangle:
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name = 'Triangle'
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def __init__(self, s1, s2, s3):
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self.s1 = s1
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self.s2 = s2
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self.s3 = s3
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def area(self):
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sp = (self.s1 + self.s2 + self.s3) / 2
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return ( sp*(sp-self.s1)*(sp-self.s2)*(sp-self.s3) ) ** 0.5
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def perimeter(self):
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return self.s1 + self.s2 + self.s3
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class Circle:
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name = 'Circle'
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def __init__(self, radius):
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self.radius = radius
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def area(self):
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return 3.14 * self.radius * self.radius
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def perimeter(self):
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return 2 * 3.14 * self.radius
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r1 = Rectangle(13,25)
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r2 = Rectangle(14,16)
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t1 = Triangle(14,17,12)
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t2 = Triangle(25,33,52)
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c1 = Circle(14)
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c2 = Circle(25)
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def find_area_perimeter(shape):
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print(shape.name)
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print('Area : ', shape.area() )
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print('Perimeter : ', shape.perimeter() )
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find_area_perimeter(t2)
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find_area_perimeter(c1)
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find_area_perimeter(r2)
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shapes = [r1,r2,t1,t2,c1,c2]
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total_area = 0
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total_perimeter = 0
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for shape in shapes:
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total_area += shape.area()
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total_perimeter += shape.perimeter()
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print(total_area, total_perimeter)
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