import turtle
a = turtle.Turtle()
screen = turtle.Screen()
screen.bgcolor('black')
col=('white','red','yellow','green','blue','pink','purple')
a.speed(0)


for i in range(200):
    a.forward(i*4)
    a.right(91)
    a.color(col[i%7])

for b in range(3):
    a.forward(i*4)
    a.right(91)

for c in range(2):
    a.forward(i*4)
    a.right(91)

