save project

diy1.py

@@ -4,8 +4,11 @@
 """
 import turtle
 pen=turtle.Pen()
+screen=turtle.Screen()
 pen.speed(100)
-for i in range(1,300):   
+color=["red","green","yellow","black"];
+for i in range(1,300):
+    pen.pencolor(color[i%4])  
     pen.forward(i)
     pen.right(91)
-pen.done
+turtle.done()