Get full traceback

Question

How can i get full traceback in the following case, including the calls of func2 and func functions?

import traceback

def func():
         


        

Answer 1

This is based on @user4815162342 s answer, but a bit more minimalistic:

import sys
import collections

FauxTb = collections.namedtuple("FauxTb", ["tb_frame", "tb_lineno", "tb_next"])

def full_exc_info():
    """Like sys.exc_info, but includes the full traceback."""
    t, v, tb = sys.exc_info()
    f = sys._getframe(2)
    while f is not None:
        tb = FauxTb(f, f.f_lineno, tb)
        f = f.f_back
    return t, v, tb

It avoids throwing the dummy exception, at the cost of requiring the usage of sys._getframe(). It assumes being using the the except clause where the exception was caught, as it goes up to stack frames (full_exc_info and the function that calls full_exc_info -- that would be the function that calls the raising code, and as such is already included in the original traceback).

This gives the same output as the code in user4815162342 s answer.

If you don't mind the slight differences in formatting, you can also use

import logging

def func():
    try:
        raise Exception('Dummy')
    except:
        logging.exception("Something awful happened!", stack_info=True)

def func2():
    func()

func2()

which results in

ERROR:root:Something awful happened!
Traceback (most recent call last):
  File "test.py", line 5, in func
    raise Exception('Dummy')
Exception: Dummy
Stack (most recent call last):
  File "test.py", line 12, in 
    func2()
  File "test.py", line 10, in func2
    func()
  File "test.py", line 7, in func
    logging.exception("Something awful happened!", stack_info=True)

In this case, you'll get on trace from the try to the exception, and a second from the root call to the location of the logging call.