save project

my_tree.py

@@ -13,5 +13,12 @@ pen.backward(150)    # 后退
 pen.down()
 
 pen.forward(100)
-r
+pen.right(30)
+pen.forward(50)
+pen.backward(50)
+pen.left(60)
+pen.forward(50)
+pen.backward(50)
+pen.right(30)
+pen.backward(100)
 turtle.done()