save project

diy1.py

@@ -7,14 +7,15 @@ import turtle
 
 pen = turtle.Pen()
 screen = turtle.Screen()
-screen.
+screen.bgcolor('black')
 colors=["white","blue","violet","cyan"]
 pen.speed(0)
 # 请创造师在下面接着创作
 distance=1
 for i in range(300):
-    pen.fd(distance)
+    pen.pencolor(colors[i%4])
+    pen.fd(i)
     pen.right(91)
     distance+=1
-turtle.done
+turtle.done()