save project

diy1.py

@@ -7,7 +7,11 @@ import turtle
 pen = turtle.Pen()
 pen = turtle.Pen()
 # 请创造师在下面接着创作
 # 请创造师在下面接着创作
 distance=5
 distance=5
+screen=turtle.Screen()
+screen.bgcolor("black")
+color=["red","yellow","green","blue"]
 for i in range(300):
 for i in range(300):
+    pen.color(color[i%4])
     pen.forward(distance)
     pen.forward(distance)
     distance+=1
     distance+=1
     pen.right(91)
     pen.right(91)