save project

diy1.py

@@ -5,9 +5,13 @@
 import turtle
 import turtle
 
 
 pen = turtle.Pen()
 pen = turtle.Pen()
+color=["red","yellow","green","orange"]
+s =turtle.Screen()
 # 请创造师在下面接着创作
 # 请创造师在下面接着创作
 distance=1
 distance=1
 for i in range(300):
 for i in range(300):
+    s.bgcolor("black")
+    pen.pencolor(color[i%4])
     pen.forward(distance)
     pen.forward(distance)
     distance+=1
     distance+=1
     pen.right(91)
     pen.right(91)