title: How to add to an already existing variable in python?
body: <p>I know this is a very simple question, but I couldn't find it. Basically what I'm trying to is have <code>a=2</code>, <code>b=3</code>, and I need <code>a+b=b</code> so when I add <code>a</code> and <code>b</code> what it equals needs to be <code>b</code>.</p>