save project

my_tree.py

@@ -12,7 +12,7 @@ pen.up()
 pen.backward(150)    # 后退
 pen.down()
 
-turtle.done()
+turtle.left(90)
 turtle.pendown()
 turtle.forward(100)
 turtle.left(30)
@@ -25,3 +25,4 @@ turtle.forward(50)
 turtle.penup()
 turtle.backward(50)
 
+