from turtle import Screen,Turtle
lay = Turtle()
screen = Screen()
screen.setup(width=600,height=600)
screen.title("anaconda")
screen.bgcolor("black")
x = 0

for _ in range(4):
    lay=Turtle("square")
    lay.color("white")

    lay.penup()
    lay.goto(x=x,y=0)
    x += 20


screen.exitonclick()