Code :
import turtle
ninja = turtle.Turtle()
turtle.bgcolor("black")
ninja.speed(10)
for i in range(180):
ninja.pencolor("white")
ninja.forward(100)
ninja.right(30)
ninja.forward(20)
ninja.left(60)
ninja.forward(50)
ninja.right(30)
ninja.penup()
ninja.setposition(0, 0)
ninja.pendown()
ninja.right(2)
turtle.done()