auto save

1.py

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