save project

my_tree.py

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