auto save

my_tree.py

@@ -15,7 +15,16 @@ pen.down()
 pen.forward(100)
 #主干
 pen.right(30)
-
-
+pen.forward(50)
+pen.up()
+pen.backward(50)
+pen.down()
+pen.left(60)
+pen.forward(50)
+pen.up()
+pen.backward(50)
+pen.right(30)
+pen.backward(100)
+pen.down()
 
 turtle.done()