save project

diy1.py

+import turtle
+pen=turtle.Pen()
+screen=turtle.Screen()
+screen.bgcolor('black')
+colers=["red","yellow","green","orange"]
+pen.speed(100)
+for i in range(1,301):
+    pen.pencolor(colers[i%4])
+    pen.forward(i)
+    pen.right(91)
+turtle.done()