import turtle

sc=turtle.Screen()
sc.setup(600,600)
spiral = turtle.Turtle()
spiral.speed(10)
sc.bgcolor("black")
col = ("yellow","blue","white","green")
c=0

#python coder

for i in range (50):
    spiral.forward(i*10)    
    spiral.right(144)
    spiral.color(col[c])
    if c==3:
        c=0
    else:
        c+=1