save project

diy1.py

+import turtle
+pen = turtle.Pen()
+pen = screen.Pen
+screen.bgcolor("black")
+colors=["red","bule","yellow","pink"]
+for i in range(300):
+    pen.forward(i)
+    colors[i%4]
+    pen.right(121)
+# 隐藏画笔，保存画布
+pen.hideturtle()
+turtle.done()
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