不存在这样的文件或目录:u'lastid。在同一个目录下的文件。在本地工作，而不是Heroku。

I suspect this is a very newbie question but I can't find any solutions that are helping :( I've been trying to get started with Python by building a simple Twitter bot which replies to people who tweet at it. It worked locally, and it doesn't work on Heroku.I suspect this is a very newbie question but I