save project

my_tree.py

@@ -11,7 +11,7 @@ pen.left(90)
 pen.up()
 pen.up()
 pen.backward(150)    # 后退
 pen.backward(150)    # 后退
 pen.down()
 pen.down()
-pen.pensize(5)
+pen.pensize(1)
 pen.forward(100)
 pen.forward(100)
 pen.right(30)
 pen.right(30)
 pen.forward(50)
 pen.forward(50)