save project

diy1.py

@@ -4,9 +4,14 @@
 """
 """
 import turtle
 import turtle
 pen=turtle.Pen()
 pen=turtle.Pen()
+si=turtle.Screen()
+si.bgcolor("black")
+pen.speed(100)
+colors=["red","yellow","blue","green"]
 for i in range(1,300):
 for i in range(1,300):
     pen.forward(i)
     pen.forward(i)
-    pen.right(91)    
+    pen.right(91)   
+    pen.pencolor(colors[i%4]) 
 
 
 # 请创造师在下面接着创作
 # 请创造师在下面接着创作