from turtle import Turtle,Screen
import random
import time
window=Screen()
window.setup(800,800)
window.bgcolor(“black”)
positions=[(-40,0), (-20,0), (0,0), (20,0), (40,0), (60,0),(80,0)]
angles=(90,0,0,0)
window.tracer(0)
turtles=
for i in range(len(positions)):
newturtle=Turtle(“square”)
newturtle.color(“white”)
newturtle.penup()
newturtle.goto(positions[i])
turtles.append(newturtle)
game_on=True
while game_on:
for i in range(len(turtles) -1):
turtles[i].goto(turtles[i+1].pos())
turtles[-1].forward(20)
turtles[-1].left(random.choice(angles))
window.update()
time.sleep(0.5)
window.exitonclick()