save project

diy1.py

@@ -4,13 +4,17 @@
 """
 import turtle
 pen=turtle.Pen()
-
+colors=["red","orange","yellow","green"]
+screen=turtle.Screen()
+screen.bgcolor("black")
 for i in range(1,300):
+
     pen.forward(i)
     pen.left(91)
-        
+    pen.pencolor(colors[i%4])
+
 pen.hideturtle()
-turtle.done
+turtle.done()
 # 请创造师在下面接着创作
 
 # 隐藏画笔，保存画布