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
 import turtle
-
 pen = turtle.Pen()
 pen = turtle.Pen()
-# 请创造师在下面接着创作
-distance=1
-for i in range(300):
-    pen.forward(distance)
-    distance+=1
-    pen.right(121)
-# 隐藏画笔，保存画布
+screen=turtle.Screen()
+screen.bgcolor("black")
+a=["red","yellow","blue","green"]
+pen.speed(100)
+for i in range(1,999):
+    pen.pencolor(a[i%4])
+    pen.forward(i)
+    pen.right(120)
 pen.hideturtle()
 pen.hideturtle()
 turtle.done()
 turtle.done()
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