two_canvases.py 文件源码

def main():
    root = TK.Tk()
    cv1 = TK.Canvas(root, width=300, height=200, bg="#ddffff")
    cv2 = TK.Canvas(root, width=300, height=200, bg="#ffeeee")
    cv1.pack()
    cv2.pack()

    s1 = TurtleScreen(cv1)
    s1.bgcolor(0.85, 0.85, 1)
    s2 = TurtleScreen(cv2)
    s2.bgcolor(1, 0.85, 0.85)

    p = RawTurtle(s1)
    q = RawTurtle(s2)

    p.color("red", (1, 0.85, 0.85))
    p.width(3)
    q.color("blue", (0.85, 0.85, 1))
    q.width(3)

    for t in p,q:
        t.shape("turtle")
        t.lt(36)

    q.lt(180)

    for t in p, q:
        t.begin_fill()
    for i in range(5):
        for t in p, q:
            t.fd(50)
            t.lt(72)
    for t in p,q:
        t.end_fill()
        t.lt(54)
        t.pu()
        t.bk(50)

    return "EVENTLOOP"