I'm doing Google App Engine Python stuff with Sublime Text 2. Is there any way to get it to somehow guess at function signatures? So if I start writing do_some

I'm doing Google App Engine Python stuff with Sublime Text 2. Is there any way to get it to somehow guess at function signatures? So if I start writing do_something(... I could see the args that do_something() expects. Assuming it's just a function that is plainly defined somewhere in my project folder would be enough for me. Another thing is when I am testing the app in localhost and it spits out error messages indicating the line number(s) where I sinned, it would be nice to somehow be able to jump to them.