Log exception with traceback

python exception logging error-handling
TIMEX picture TIMEX · Oct 2, 2009 · Viewed 134.6k times · Source

How can I log my Python errors?

try:
    do_something()
except:
    # How can I log my exception here, complete with its traceback?

Answer

nosklo picture nosklo · Oct 2, 2009

Use logging.exception from within the except: handler/block to log the current exception along with the trace information, prepended with a message.

import logging
LOG_FILENAME = '/tmp/logging_example.out'
logging.basicConfig(filename=LOG_FILENAME, level=logging.DEBUG)

logging.debug('This message should go to the log file')

try:
    run_my_stuff()
except:
    logging.exception('Got exception on main handler')
    raise

Now looking at the log file, /tmp/logging_example.out:

DEBUG:root:This message should go to the log file
ERROR:root:Got exception on main handler
Traceback (most recent call last):
  File "/tmp/teste.py", line 9, in <module>
    run_my_stuff()
NameError: name 'run_my_stuff' is not defined

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