save project

diy1.py

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