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
+"""
+"""
+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
-turtle.speed(1000)
-for i in range(1,400):
-    turtle.forward(i)
-    turtle.right(91)
-turtle.hideturtle()
+pen = turtle.Pen()
+screen = turtle.Screen()
+screen.bgcolor("black")
+colors=["dark orchid","deepsky blue","tomato", "yellow"]
+pen.speed(1000)
+for i in range(1,300):
+    pen.pencolor(colors[i%4])
+    pen.forward(i)
+    pen.right(91)
+pen.hideturtle()
 turtle.done()
 turtle.done()
+