&exception,

&vm.ctx.exceptions.base_exception_type

let traceback = vm

.get_method(exception.clone(),&"__traceback__".to_string())

let traceback_name = vm.new_str("__traceback__".to_string());

let traceback = vm.get_attribute(exception.clone(), traceback_name).unwrap();

trace!("Adding to traceback: {:?} {:?}", traceback, lineno);

let pos = vm.ctx.new_tuple(vec![

vm.ctx.new_str(filename.clone()),