Program_5-28.py

import circle
import rectangle

AREA_CIRCLE_CHOICE = 1
CIRCUMFERENCE_CHOICE = 2
AREA_RECTANGLE_CHOICE = 3
PERIMETER_RECTANGLE_CHOICE = 4
QUIT_CHOICE = 5

def main():
    choice = 0

    while choice != QUIT_CHOICE:
        display_menu()
        choice = int(input('Enter your choice: '))

        if choice == AREA_CIRCLE_CHOICE:
            radius = float(input("Enter the circle's radius: "))
            print('The area is', circle.area(radius))
        elif choice == CIRCUMFERENCE_CHOICE:
            radius = float(input("Enter the circle's radius: "))
            print('the circumference is', \
                  circle.circumference(radius))
        elif choice == AREA_RECTANGLE_CHOICE:
            width = float(input("Enter the rectangle's width: "))
            length = float(input("Enter the rectangles's length: "))
            print('The area is', rectangle. area(width, length))
        elif choice == PERIMETER_RECTANGLE_CHOICE:
            width = float(input("Enter the rectangle's width: "))
            length = float(input("Enter the rectangle's length: "))
            print('The perimter is', \
                  rectangle.perimeter(width, length))
        elif choice == QUIT_CHOICE:
            print('Exiting the program...')
        else:
            print('Error: invalid selection.')
def display_menu():
    print(' menu')
    print('1) Area of a circle')
    print('2) Circumference of a circle')
    print('3) Area of a rectangle')
    print('4) Perimeter of a rectangle')
    print('5) Quit')

main()