Class Colored Sphere - Python Programming Exercise

import math  # Import math module for calculations

# Circle class with radius, center coordinates, and color
class Circle:
    def __init__(self, radius, x, y, color):
        self.radius = radius  # Radius of the circle
        self.x = x  # X coordinate of the circle's center
        self.y = y  # Y coordinate of the circle's center
        self.color = color  # Color of the circle

    # Method to change the color of the circle
    def change_color(self, new_color):
        self.color = new_color  # Update the color

    # Method to calculate the perimeter (circumference)
    def calculate_perimeter(self):
        return 2 * math.pi * self.radius  # Formula for perimeter (circumference)

    # Method to calculate the area of the circle
    def calculate_area(self):
        return math.pi * (self.radius ** 2)  # Formula for area

    # Method to move the circle by changing its center coordinates
    def move(self, new_x, new_y):
        self.x = new_x  # Update the X coordinate
        self.y = new_y  # Update the Y coordinate

    # Method to describe the circle as a string
    def __str__(self):
        return f"Circle(radius={self.radius}, center=({self.x}, {self.y}), color={self.color})"

# Test program to create and test circles
if __name__ == "__main__":
    # Create a Circle object with radius 5, center at (0, 0), and color red
    circle1 = Circle(5, 0, 0, "red")

    # Print initial circle details
    print("Initial Circle:")
    print(circle1)
    print("Perimeter (Circumference):", circle1.calculate_perimeter())
    print("Area:", circle1.calculate_area())

    # Move the circle to new coordinates (2, 3)
    circle1.move(2, 3)
    print("\nCircle after moving:")
    print(circle1)

    # Change the color of the circle to blue
    circle1.change_color("blue")
    print("\nCircle after changing color:")
    print(circle1)

    # Create another Circle object with radius 10, center at (5, 5), and color green
    circle2 = Circle(10, 5, 5, "green")
    print("\nSecond Circle:")
    print(circle2)
    print("Perimeter (Circumference):", circle2.calculate_perimeter())
    print("Area:", circle2.calculate_area())

 Output

Initial Circle:
Circle(radius=5, center=(0, 0), color=red)
Perimeter (Circumference): 31.41592653589793
Area: 78.53981633974483

Circle after moving:
Circle(radius=5, center=(2, 3), color=red)

Circle after changing color:
Circle(radius=5, center=(2, 3), color=blue)

Second Circle:
Circle(radius=10, center=(5, 5), color=green)
Perimeter (Circumference): 62.83185307179586
Area: 314.1592653589793