crescent-rings-3D?

By Hardik Prajapati
def manage_colors(strategy=None):
    red_yellow = ["Gold", "DarkRed", "Yellow", "Crimson"]
    red_blue = ["DarkRed", "Red"]
    index = 0
    
    def cycle_colors_red_yellow():
        nonlocal index
        c = red_yellow[index]
        index += 1
        index %= len(red_yellow)
        return c
    
    def cycle_colors_red():
        nonlocal index
        c = red_blue[index]
        index += 1
        index %= len(red_blue)
        return c
    
    if strategy=="red":
        return cycle_colors_red
    else:
        return cycle_colors_red_yellow
    
cycle_colors = manage_colors(strategy="red")

r = 300
diff = 10
shape = circle(r=r, fill="black") # initial background shape

while(r > 0):
    c = cycle_colors()
    
    r -= diff
    if ((r // diff) % 2 == 1):
        x = 0
    else:
        x = diff
    
    shape += circle(r=r, x=x, fill=c, stroke=c)

show(shape)