Saving to Python Selenium Screenshot Variables

How do I save it to a variable without saving it as a screenshot file?

I'd like to access the website, take a screenshot, save it as a variable, not save it as a file, and register it as an attachment in an email and send it to you I'm asking you this question because I can only see you saving it as a file in Selenium.

If I save it as a file, I have to make a code that keeps erasing or erasing it