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diy1.py

@@ -4,7 +4,7 @@ pen = turtle.Pen()
 colors=["red","orange","yellow","green"]
 for i in range(1,300):
     pen.forward(i)
-    pen.pencolor(color[i%4]))
+    pen.pencolor(colors[i%4])
     pen.right(91)
 # 隐藏画笔，保存画布
 turtle.done()
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