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diy1.py

@@ -3,12 +3,14 @@
 每次移动都增加画笔移动的长度，并旋转91°，重复执行300次，查看效果
 """
 import turtle
-screen=turtle.screen()
+screen=turtle.Screen()
+screen.bgcolor("black")
 pen = turtle.Pen()
 # 请创造师在下面接着创作
-for i in range (1,300):
-    pen.colur()
-    pen.forward()
+colors=["red","orange","yellow","green"]
+for i in range (1,10000):
+    pen.pencolor(colors[i%4])
+    pen.forward(i)
     pen.right(91)