save project

diy1.py

 import turtle
 import turtle
 pen = turtle.Pen()
 pen = turtle.Pen()
-pencolor(red):
+screen.bgcolor("black")
+yanhaochen = ['red','orange','black','yellow']
+screen = turtle.Screen()
+
 for i in range(1,300):
 for i in range(1,300):
-    pen.forward(i)
+    pen.forward(yanhaochen[i%4])
     pen.right(91)
     pen.right(91)
 tuple.hidetutle()
 tuple.hidetutle()
 tuple.done()
 tuple.done()