auto save

my_tree.py

@@ -2,7 +2,6 @@ import turtle
 
 pen = turtle.Turtle()
 pen.color('sienna')
-# 画布大小
 w = turtle.Screen()
 w.bgcolor('wheat')      # wheat小麦
 
@@ -11,5 +10,12 @@ pen.left(90)
 pen.up()
 pen.backward(150)    # 后退
 pen.down()
-
-turtle.done()
+pen.color("red")
+pen.forward(150)
+pen.left(45)
+pen.forward(75)
+pen.up()
+pen.backward(75)    # 后退
+pen.down()
+pen.left(270)
+pen.forward(75)