save project

diy1.py

+"""
+使用turtle模块画图
+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
+pen = turtle.Pen()
+color=["red","yellow","green","brown"]
+screen = turtlr.Screen()
+screen.bgcolor("black")
+for i in range(1,301):
+    pen.color(color[i%4])
+    pen.right(91)
+    pen.forward(i)
+pen.hideturtle()
+turtle.done()
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