auto save

my_tree.py

@@ -6,6 +6,7 @@ w = turtle.Screen()
 w.bgcolor('wheat')      # wheat小麦
 # 移动到起点
 pen.left(90)
+y'y'h'f'x'luu'h'y'y'g'y'g
 pen.up()
 pen.backward(150)    # 后退
 pen.down()