Replacing Python Classes with Modules
So one thing about not using objects is that it makes getters/setters a bit less flexible in that you can't start them out as pure properties and then move them to property() values later.  

Also, by using something like helpers.login(..), you're implicitly limiting yourself to one login at a time since the helpers namespace isn't managed like an object namespace would be.  That may or may not be a problem for you now, but it's definitely a corner you may not be aware you're coding yourself into.  If in the future you had two things you wanted to log into using the same code, you'd have to restructure quite a bit.