save project

diy1.py

@@ -5,11 +5,15 @@
 import turtle
 
 pen = turtle.Pen()
+colors=["red","orange","yellow","green"]
+pen.speed(200)
+screen=turtle.Screen()
+
 # 请创造师在下面接着创作
 for i in range(300):
+    pen.pencolor(colors[i%4])
     pen.forward(i)
     pen.left(91)
-    changdu=changdu+1