save project

diy1.py

 import turtle
 pen=turtle.Pen()
-distance=1
-colors=["violet","blue","cyan","yellow"]
-for i in range(500):
-    pen.forward(distance)
-    pen.right(91)
-    distance+=1
+screen=turtle.Screen()
+screen.bgcolor("black")
+
+colors=["white","pink","white","pink"]
+for i in range(1,500):
     pen.pencolor(colors[i%4])
+    pen.right(91)
+    pen.forward(i)
+    
 # 请创造师在下面接着创作
 # 隐藏画笔，保存画布
 pen.hideturtle()