save project

diy1.py

@@ -5,13 +5,16 @@
 import turtle
 
 pen = turtle.Pen()
+screen=turtle.Screen()
+screen.bgcolor('black')
 pen.speed(0)
 # 请创造师在下面接着创作
-
+colors=['red','orange','yellow','green']
 for i in range(1,300):
+    pen.pencolor(colors[i%4])
     pen.forward(i)
     
-    pen.right(12)
+    pen.right()
 # 隐藏画笔，保存画布
 pen.hideturtle()
 turtle.done()
\ No newline at end of file