Как я могу просмотреть уценку в Emacs в режиме реального времени?

import traceback
def foo():
    traceback.print_stack()
def bar():
    foo()
def car():
    bar():

car()
File "", line 1, in 
File "C:\Python27\lib\idlelib\run.py", line 97, in main
  ret = method(*args, **kwargs)
File "C:\Python27\lib\idlelib\run.py", line 298, in runcode
    exec code in self.locals
File "", line 1, in 
File "", line 2, in car
File "", line 2, in bar
File "", line 2, in foo
  traceback