Python

Constructors

Demonstrate the use of constructors and the init method in a Python class

class Circle:
    def __init__(self, radius):
        self.radius = radius
    def area(self):
        return 3.14 * self.radius * self.radius
    def perimeter(self):
        return 2 * 3.14 * self.radius

circle = Circle(5)
print("Area: ", round(circle.area(),2))
print("Perimeter: ", round(circle.perimeter(),2))

# Output:
    # Area:  78.5
    # Perimeter:  31.4

note

To compile and run the program, you can use the following commands:

python3 foo.py