save project

diy1.py

+import  turtle
+color=["green","red","yellow","blue"]
+pen=turtle.Pen()
+screen=turtle.Screen()
+screen.bgcolor("green")
+for i in range(1,300):
+    pen.pencolor(color[i%4])
+    pen.forward(i)
+    pen.right(91)
+pen.hideturtle()
+turtle.done()
+