save project

my_tree.py

@@ -11,13 +11,18 @@ pen.left(90)
 pen.up()
 pen.up()
 pen.backward(150)    # 后退
 pen.backward(150)    # 后退
 pen.down()
 pen.down()
-pen .forward(100)
+
+pen.forward(100)
 pen.right(30)
 pen.right(30)
 pen.forward(50)
 pen.forward(50)
+pen.up()
 pen.backward(50)
 pen.backward(50)
+pen.down()
 pen.left(60)
 pen.left(60)
 pen.forward(50)
 pen.forward(50)
+pen.up()
 pen.backward(50)
 pen.backward(50)
+pen.down()
 pen.right(30)
 pen.right(30)
 pen.up()
 pen.up()
 pen.backward(100)
 pen.backward(100)