save project

diy1.py

@@ -3,12 +3,15 @@
 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
 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
-
+screen = turtle.Screen()
+screen.bgcolor("ForestGreen")
+colors = ["DarkRed","DarkGoldenrod4","Cyan","HotPink"]
 pen = turtle.Pen()
 pen = turtle.Pen()
 # 请创造师在下面接着创作
 # 请创造师在下面接着创作
-for i in range(0,499):
+for i in range(0,999):
+    pen.pencolor(colors[i%4])
     pen.forward(i)
     pen.forward(i)
-    pen.right(90)
+    pen.right(91)
     b = 500 - i
     b = 500 - i
     print(b)
     print(b)
 # 隐藏画笔，保存画布
 # 隐藏画笔，保存画布