python_practics

   import  turtle

   turtle.bgcolor("black")

   turtle.pencolor("yellow")

   turtle.color("yellow","green")

   turtle.shape("turtle")

   turtle.pensize(5)

   mycolor=["red","blue","yellow","green","orange"]

   k=0

   j=200

   for i in range(0,17,1):

      turtle.pencolor(mycolor[k])

      k+=1

      if k==4:

          k=0

      turtle.forward(j)

      j=j-10

      turtle.left(90)



      turtle.done()