save project

风车.py

-import turtle
+import turtle
 import turtle
 pen=turtle.Pen()
-pen.colours["red","orange","yellow","green"]
+screen=turtle.Screen()
+screen.bgcolor("black")
 for i in range(1,300):
+    colors=["red","orange","yellow","blue"]
+    pen.color(colors[i%4])
     pen.forward(i)
     pen.left(91)
-turtle.done()
-
-
-
+turtle.done()
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