save project

diy1.py

@@ -5,15 +5,17 @@
 import turtle
 
 pen = turtle.Pen()
+screen=turtle.Screen()
+screen.bgcolor("black")
 pen.speed(0)
-color[red,orange,yellow,green]
+color=['red','orange',"yellow",'green']
 # 请创造师在下面接着创作
 
 for i in range(1,300):
+    pen.pencolor(color[i%4])
     pen.forward(i)
     pen.right(91)
-    screen=turtle.Screen()
-    screen.bgcolor("black")
+    
 # 隐藏画笔，保存画布
 pen.hideturtle()
 turtle.done()
\ No newline at end of file