将对象文件附加到电子邮件python 3

I have found a lot of examples on the net of how to attach local files to an email. What I want to do is attach a file like object to an email. Why you ask? so I don't have to deal with cleaning up files. Below is my code and my error. After much googling I still have not managed to get it to work, any help would be greatly appreciated :)I have found a lot of examples on the net of ho