[VISIBLE ONLY LOCALLY] Optionally view what the website will look like at another time (in PDT):
Credit: Problem written by Chris Piech.
This example lets you treat your computer like a piece of paper and your mouse like a hole puncher. The user should be able to click anywhere on the window and create holes (ovals).
HOLE_RADIUS describes the radius of each hole you will punch. 10 is a good size for this.
""" File: hole_puncher.py --------------------- This program lets you click anywhere on the canvas to "punch a hole" (e.g. draw a black circle there). """ from graphics import Canvas HOLE_RADIUS = 10 def main(): canvas = Canvas() canvas.set_canvas_title("Hole Puncher") # animation loop while True: clicks = canvas.get_new_mouse_clicks() for click in clicks: draw_hole(canvas, click.x, click.y) canvas.update() canvas.mainloop() def draw_hole(canvas, x, y): """ Draws a circle on the canvas centered at the given location. """ oval = canvas.create_oval(x - HOLE_RADIUS, y - HOLE_RADIUS, x + HOLE_RADIUS, y + HOLE_RADIUS) canvas.set_color(oval, 'black') if __name__ == "__main__": main()