save project

diy1.py

@@ -3,14 +3,16 @@
 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
-
+a = ["red","orange","yellow","green"]
+z = turtle.Screen()
+z.bgcolor("black")
 pen = turtle.Pen()
+pen.speed(100)
 # 请创造师在下面接着创作
-di
 for i in range(300):
-    pen.forward(distance)
-    distance+=1
-    pen.right(121)
+    pen.forward(i)
+    pen.pencolor(a[i%4])
+    pen.right(91)
 # 隐藏画笔，保存画布
 pen.hideturtle()
 turtle.done()
\ No newline at end of file