save project

diy1.py

@@ -5,13 +5,18 @@
 import turtle
 
 pen = turtle.Pen()
+screen=turtle.Screen()#背景
+screen.bgcolor("black")
+colors=["red","green","orange","white"]
 
 #distance=1
 for i in range(1,300):
+    pen.pensize(2)
+    pen.pencolor(colors[i%4])
     pen.speed(1000)
     pen.forward(i)
     #distance+=1
-    pen.right(121)
+    pen.right(91)
 
 pen.hideturtle()
 turtle.done()
\ No newline at end of file