save project

my_tree.py

@@ -12,4 +12,15 @@ pen.up()
 pen.backward(150)    # 后退
 pen.down()
 
+pen.forward(100)
+pen.right(30)
+pen.forward(50)
+pen.goto(0,-50)
+pen.left(60)
+pen.forward(50)
+pen.penup()
+pen.goto(0,-150)
+pen.pendown()
+
 turtle.done()
+