auto save

diy.py

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