Question

Write a program that uses key events to make a circle larger and smaller.

Answer 1

Answer:

circ = Circle(100)

circ.set_position(250, 250)

circ.set_color(Color.yellow)

add(circ)

def grow_circle(event):

   if event.key == "ArrowLeft":

       circ.set_radius(circ.get_radius() - 10)

   if event.key == "ArrowRight":

       circ.set_radius(circ.get_radius() + 10)

   

add_key_down_handler(grow_circle)

Explanation:

By making it that when the left/right arrow is clicked the radius of the circle is first taking into account before anything else, then each time the arrow is clicked the current radius either gets 10 added or removed from it.