save project

diy1.py

@@ -4,11 +4,16 @@
 """
 import turtle
 
-
+c=["red","brown","blue","yellow"]
+index=0
 pen = turtle.Pen()
 for i in range(1,301):
+    pen.pencolor(c[index])
     pen.forward(i)
-    pen.left(185)
+    pen.left(91)
+    index+=1
+    if index>3:
+        index=0
 # 隐藏画笔，保存画布
 pen.hideturtle()
 turtle.done()