auto save

for循环.py

+import turtle
+import turtle
+turtle.setup(1.0,1.0)
+turtle.bgcolor("black")
+turtle.speed(0)
+list=["yellow","red","orange","blue"]
+for i in range(300):
+    turtle.pencolor(list[i%4])
+    turtle.forward(i)
+    turtle.right(91)
+turtle.hideturtle()
+turtle.done()