save project

diy1.py

+
+import turtle
+turtle.screensize(bg = "black")
+pen=turtle.Pen()
+yan = ["red","orange","yellow","green"]
+for i in range(1,300,1):
+    pen.pencolor(yan[i%4])
+    pen.forward(i)
+    pen.left(91)
+turtle.heading()
+
+