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Raw Queries and Responses

1. Shard Calculation

Query:

Response:

Calculated Shard: 169 (from laksa098)

2. Crawled Status Check

Query:

curl -X POST \
  'http://laksa169.int.ahrefs:8124/' \
  -H 'Content-Type: text/plain' \
  -H 'X-ClickHouse-Database: crawler3' \
  -H 'Authorization: Basic YXBpOg==' \
  -d 'SELECT getAhrefsURLFromUnparsed(src_unparsed) AS found_url, ifNull(toUnixTimestamp(download_stamp), 0) AS crawl_time, ifNull(toUnixTimestamp(props_url_first_seen), 0) AS first_indexed_time, download_http_code AS http_code, src_unparsed AS src_unparsed, src_root_hash AS src_root_hash, history_drop_reason AS history_drop_reason, meta_title AS meta_title, meta_descriptions AS meta_descriptions, attrs_boilerpipe_text AS attrs_boilerpipe_text, attrs_markdown AS attrs_markdown, attrs_readable_markdown AS attrs_readable_markdown, meta_canonical AS meta_canonical FROM crawler3.page_info_local FINAL PREWHERE (src_root_hash, src_unparsed) IN ((getAhrefsRootHashFromUnparsed(getAhrefsUnparsedNoserviceFromURL(\'https://stackoverflow.com/questions/4690600/python-exception-message-capturing\')), getAhrefsUnparsedNoserviceFromURL(\'https://stackoverflow.com/questions/4690600/python-exception-message-capturing\'))) FORMAT JSONEachRow'

Response:

{"found_url":"https:\/\/stackoverflow.com\/questions\/4690600\/python-exception-message-capturing","crawl_time":1761947754,"first_indexed_time":1493229386,"http_code":200,"src_unparsed":"com,stackoverflow!\/questions\/4690600\/python-exception-message-capturing s443","src_root_hash":"714406497480128969","history_drop_reason":null,"meta_title":"python exception message capturing - Stack Overflow","meta_descriptions":[],"attrs_boilerpipe_text":"If you want the error class, error message, and stack trace, use  sys.exc_info() . Minimal working code with some formatting: import  sys\n import  traceback\n\n try :\n    ans =  1 \/ 0 except  BaseException  as  ex:\n    \n    ex_type, ex_value, ex_traceback = sys.exc_info()\n\n    \n    trace_back = traceback.extract_tb(ex_traceback)\n\n    \n    stack_trace =  list ()\n\n     for  trace  in  trace_back:\n        stack_trace.append( \"File : %s , Line : %d, Func.Name : %s, Message : %s\"  % (trace[ 0 ], trace[ 1 ], trace[ 2 ], trace[ 3 ]))\n\n     print ( \"Exception type : %s \"  % ex_type.__name__)\n     print ( \"Exception message : %s\"  %ex_value)\n     print ( \"Stack trace : %s\"  %stack_trace)\n Which gives the following output: Exception  type  : ZeroDivisionError\nException message : division by zero\nStack trace : [ 'File : .\\\\test.py , Line : 5, Func.Name : <module>, Message : ans = 1\/0' ]\n The function  sys.exc_info()  gives you details about the most recent exception. It returns a tuple of  (type, value, traceback) . traceback  is an instance of traceback object. You can format the trace with the methods provided. More can be found in the  traceback documentation  .","attrs_markdown":"# ![site logo](https:\/\/stackoverflow.com\/Content\/Img\/SE-logo75.png)\nBy clicking “Sign up”, you agree to our [terms of service](https:\/\/stackoverflow.com\/legal\/terms-of-service\/public) and acknowledge you have read our [privacy policy](https:\/\/stackoverflow.com\/legal\/privacy-policy).\n\n# OR\n\nAlready have an account? [Log in](https:\/\/stackoverflow.com\/users\/login)\n\n[Skip to main content](https:\/\/stackoverflow.com\/questions\/4690600\/python-exception-message-capturing#content)\n\n[Stack Overflow](https:\/\/stackoverflow.com\/)\n\n1. [About](https:\/\/stackoverflow.co\/)\n2. Products\n3. [For Teams](https:\/\/stackoverflow.co\/teams\/)\n\n1. 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To gain full voting privileges, [earn reputation](https:\/\/stackoverflow.com\/help\/whats-reputation).\n\nGot it\\!\n\nGo to help center to learn more\n\n# [python exception message capturing](https:\/\/stackoverflow.com\/questions\/4690600\/python-exception-message-capturing)\n[Ask Question](https:\/\/stackoverflow.com\/questions\/ask)\n\nAsked\n\n14 years, 9 months ago\n\nModified [3 months ago](https:\/\/stackoverflow.com\/questions\/4690600\/python-exception-message-capturing?lastactivity \"2025-06-14 10:52:22Z\")\n\nViewed 1.6m times\n\nThis question shows research effort; it is useful and clear\n\n970\n\nSave this question.\n\nShow activity on this post.\n\n```\nimport ftplib\nimport urllib2\nimport os\nimport logging\nlogger = logging.getLogger('ftpuploader')\nhdlr = logging.FileHandler('ftplog.log')\nformatter = logging.Formatter('%(asctime)s %(levelname)s %(message)s')\nhdlr.setFormatter(formatter)\nlogger.addHandler(hdlr)\nlogger.setLevel(logging.INFO)\nFTPADDR = \"some ftp address\"\n\ndef upload_to_ftp(con, filepath):\n    try:\n        f = open(filepath,'rb')                # file to send\n        con.storbinary('STOR '+ filepath, f)         # Send the file\n        f.close()                                # Close file and FTP\n        logger.info('File successfully uploaded to '+ FTPADDR)\n    except, e:\n        logger.error('Failed to upload to ftp: '+ str(e))\n```\nThis doesn't seem to work, I get syntax error, what is the proper way of doing this for logging all kind of exceptions to a file\n\n- [python](https:\/\/stackoverflow.com\/questions\/tagged\/python \"show questions tagged 'python'\")\n- [exception](https:\/\/stackoverflow.com\/questions\/tagged\/exception \"show questions tagged 'exception'\")\n- [logging](https:\/\/stackoverflow.com\/questions\/tagged\/logging \"show questions tagged 'logging'\")\n- [except](https:\/\/stackoverflow.com\/questions\/tagged\/except \"show questions tagged 'except'\")\n- [python-logging](https:\/\/stackoverflow.com\/questions\/tagged\/python-logging \"show questions tagged 'python-logging'\")\n\n[Share](https:\/\/stackoverflow.com\/q\/4690600 \"Short permalink to this question\")\n\nShare a link to this question\n\nCopy link\n\n[CC BY-SA 2.5](https:\/\/creativecommons.org\/licenses\/by-sa\/2.5\/ \"The current license for this post: CC BY-SA 2.5\")\n\n[Improve this question](https:\/\/stackoverflow.com\/posts\/4690600\/edit)\n\nFollow\n\nFollow this question to receive notifications\n\n[edited Mar 24, 2023 at 8:20](https:\/\/stackoverflow.com\/posts\/4690600\/revisions \"show all edits to this post\")\n\n[![vvvvv's user avatar](https:\/\/i.sstatic.net\/fzsuf.jpg?s=64)](https:\/\/stackoverflow.com\/users\/5446749\/vvvvv)\n\n[vvvvv](https:\/\/stackoverflow.com\/users\/5446749\/vvvvv)\n\n32\\.8k1919 gold badges6969 silver badges103103 bronze badges\n\nasked Jan 14, 2011 at 11:33\n\n[![Hellnar's user avatar](https:\/\/www.gravatar.com\/avatar\/eb149575d3dcbd3aca84cc4d9d689474?s=64&d=identicon&r=PG)](https:\/\/stackoverflow.com\/users\/151937\/hellnar)\n\n[Hellnar](https:\/\/stackoverflow.com\/users\/151937\/hellnar)Hellnar\n\n65\\.4k8282 gold badges209209 silver badges282282 bronze badges\n\n5\n\n- 3\n  Your indentation is broken. And omit the `,` after `except`.\n  \n  Sven Marnach\n  \n  – [Sven Marnach](https:\/\/stackoverflow.com\/users\/279627\/sven-marnach \"607,086 reputation\")\n  \n  2011-01-14 11:35:23 +00:00\n  \n  [Commented Jan 14, 2011 at 11:35](https:\/\/stackoverflow.com\/questions\/4690600\/python-exception-message-capturing#comment5173725_4690600)\n- 4\n  @SvenMarnach, if you omit the `,` after `except`, you'll get `global name 'e' is not defined`, which is not much better than wrong syntax.\n  \n  Val\n  \n  – [Val](https:\/\/stackoverflow.com\/users\/1083704\/val \"11,217 reputation\")\n  \n  2013-11-18 11:11:13 +00:00\n  \n  [Commented Nov 18, 2013 at 11:11](https:\/\/stackoverflow.com\/questions\/4690600\/python-exception-message-capturing#comment29855594_4690600)\n- 22\n  @Val: Should be `except Exception as e` or `except Exception, e`, depending on Python version.\n  \n  Sven Marnach\n  \n  – [Sven Marnach](https:\/\/stackoverflow.com\/users\/279627\/sven-marnach \"607,086 reputation\")\n  \n  2013-11-19 13:03:34 +00:00\n  \n  [Commented Nov 19, 2013 at 13:03](https:\/\/stackoverflow.com\/questions\/4690600\/python-exception-message-capturing#comment29900067_4690600)\n- 1\n  Probably it's somewhere around those 8 answers, but when you open a file, close part should never be inside the try statement, but either in a finally statement or wrapped by a with statement.\n  \n  user4396006\n  \n  – user4396006\n  \n  2018-08-24 17:13:39 +00:00\n  \n  [Commented Aug 24, 2018 at 17:13](https:\/\/stackoverflow.com\/questions\/4690600\/python-exception-message-capturing#comment90968641_4690600)\n- You can do it like UnitTests in requests package do [fixexception.com\/requests\/expected-exception](https:\/\/fixexception.com\/requests\/expected-exception\/)\n  \n  Ivan Borshchov\n  \n  – [Ivan Borshchov](https:\/\/stackoverflow.com\/users\/3479125\/ivan-borshchov \"3,667 reputation\")\n  \n  2021-06-03 07:37:24 +00:00\n  \n  [Commented Jun 3, 2021 at 7:37](https:\/\/stackoverflow.com\/questions\/4690600\/python-exception-message-capturing#comment119869695_4690600)\n\n[Add a comment](https:\/\/stackoverflow.com\/questions\/4690600\/python-exception-message-capturing \"Use comments to ask for more information or suggest improvements. Avoid answering questions in comments.\")   \\|\n\n## 16 Answers 16\nSorted by:\n\n[Reset to default](https:\/\/stackoverflow.com\/questions\/4690600\/python-exception-message-capturing?answertab=scoredesc#tab-top)\n\nThis answer is useful\n\n1282\n\nSave this answer.\n\nShow activity on this post.\n\nYou have to define which type of exception you want to catch. So write `except Exception as e:` instead of `except, e:` for a general exception.\n\nOther possibility is to write your whole try\/except code this way:\n```\ntry:\n    with open(filepath,'rb') as f:\n        con.storbinary('STOR '+ filepath, f)\n    logger.info('File successfully uploaded to '+ FTPADDR)\nexcept Exception as e:      # works on python 3.x\n    logger.error('Failed to upload to ftp: %s', repr(e))\n```\nIn older versions of Python 2.x, use `except Exception, e` instead of `except Exception as e`:\n```\ntry:\n    with open(filepath,'rb') as f:\n        con.storbinary('STOR '+ filepath, f)\n    logger.info('File successfully uploaded to %s', FTPADDR)\nexcept Exception, e:        # works on python 2.x\n    logger.error('Failed to upload to ftp: %s', repr(e))\n```\n\n[Share](https:\/\/stackoverflow.com\/a\/4690655 \"Short permalink to this answer\")\n\nShare a link to this answer\n\nCopy link\n\n[CC BY-SA 4.0](https:\/\/creativecommons.org\/licenses\/by-sa\/4.0\/ \"The current license for this post: CC BY-SA 4.0\")\n\n[Improve this answer](https:\/\/stackoverflow.com\/posts\/4690655\/edit)\n\nFollow\n\nFollow this answer to receive notifications\n\n[edited Feb 20, 2024 at 6:07](https:\/\/stackoverflow.com\/posts\/4690655\/revisions \"show all edits to this post\")\n\n[![akki's user avatar](https:\/\/www.gravatar.com\/avatar\/79fa9987d90325f3ab1f8c8c0f6d7565?s=64&d=identicon&r=PG&f=y&so-version=2)](https:\/\/stackoverflow.com\/users\/3061686\/akki)\n\n[akki](https:\/\/stackoverflow.com\/users\/3061686\/akki)\n\n2,34222 gold badges2626 silver badges3939 bronze badges\n\nanswered Jan 14, 2011 at 11:40\n\n[![eumiro's user avatar](https:\/\/www.gravatar.com\/avatar\/b52c27e86c87d931e654d6a2d2cdf974?s=64&d=identicon&r=PG)](https:\/\/stackoverflow.com\/users\/449449\/eumiro)\n\n[eumiro](https:\/\/stackoverflow.com\/users\/449449\/eumiro)eumiro\n\n214k3636 gold badges306306 silver badges263263 bronze badges\n\nSign up to request clarification or add additional context in comments.\n\n## 7 Comments\nAdd a comment\n\n[![](https:\/\/i.sstatic.net\/Urpin.jpg?s=64)](https:\/\/stackoverflow.com\/users\/3406170\/whitebeard)\n\nwhitebeard\n\n[whitebeard](https:\/\/stackoverflow.com\/users\/3406170\/whitebeard)\n\n[Over a year ago](https:\/\/stackoverflow.com\/questions\/4690600\/python-exception-message-capturing#comment64726919_4690655)\n\nrepr(e) gives you the exception(and the message string); str(e) only gives the message string.\n\n2016-07-30T11:28:13.283Z+00:00\n\n295\n\nReply\n\n- Copy link\n\n[![](https:\/\/www.gravatar.com\/avatar\/294c632c8748e7051c87b8961bc4f87e?s=48&d=identicon&r=PG)](https:\/\/stackoverflow.com\/users\/4973698\/mbdevpl)\n\nmbdevpl\n\n[mbdevpl](https:\/\/stackoverflow.com\/users\/4973698\/mbdevpl)\n\n[Over a year ago](https:\/\/stackoverflow.com\/questions\/4690600\/python-exception-message-capturing#comment65828373_4690655)\n\nAs an alternative for logging exception you could use `logger.exception(e)` instead. It will log the exception with traceback at the same `logging.ERROR` level.\n\n2016-08-31T09:50:18.497Z+00:00\n\n23\n\nReply\n\n- Copy link\n\n[![](https:\/\/i.sstatic.net\/2B6rV.png?s=64)](https:\/\/stackoverflow.com\/users\/1601580\/charlie-parker)\n\nCharlie Parker\n\n[Charlie Parker](https:\/\/stackoverflow.com\/users\/1601580\/charlie-parker)\n\n[Over a year ago](https:\/\/stackoverflow.com\/questions\/4690600\/python-exception-message-capturing#comment81043343_4690655)\n\n`except Exception, e:` throws a Syntax error to me in python 3. Is this expected?\n\n2017-11-01T04:12:47.11Z+00:00\n\n10\n\nReply\n\n- Copy link\n\n[![](https:\/\/www.gravatar.com\/avatar\/b52c27e86c87d931e654d6a2d2cdf974?s=48&d=identicon&r=PG)](https:\/\/stackoverflow.com\/users\/449449\/eumiro)\n\neumiro\n\n[eumiro](https:\/\/stackoverflow.com\/users\/449449\/eumiro)\n\n[Over a year ago](https:\/\/stackoverflow.com\/questions\/4690600\/python-exception-message-capturing#comment81044650_4690655)\n\n@CharlieParker in Python3 write `except Exception as e:`\n\n2017-11-01T05:38:42.383Z+00:00\n\n38\n\nReply\n\n- Copy link\n\n[![](https:\/\/www.gravatar.com\/avatar\/df0d058549971acf574f2108e988d04f?s=48&d=identicon&r=PG&f=y&so-version=2)](https:\/\/stackoverflow.com\/users\/7517192\/alex)\n\nAlex\n\n[Alex](https:\/\/stackoverflow.com\/users\/7517192\/alex)\n\n[Over a year ago](https:\/\/stackoverflow.com\/questions\/4690600\/python-exception-message-capturing#comment115644401_4690655)\n\nThis is a bit misleading in 2020 because nobody has a Python version anymore that would require your first way (nobody uses Python \\<2.7), yet your answer makes this seem like the default way to go in Python 2, even though the second way is virtually always better. You should just remove the first way and thereby make the answer clearer.\n\n2020-12-22T15:23:06.177Z+00:00\n\n4\n\nReply\n\n- Copy link\n\nAdd a comment\n\n\\|\n\nShow 2 more comments\n\nThis answer is useful\n\n403\n\nSave this answer.\n\nShow activity on this post.\n\nThe syntax `except, e:` is no longer supported in python 3. Use the following instead.\n```\ntry:\n    do_something()\nexcept BaseException as e:\n    logger.error('Failed to do something: %s', str(e))\n```\n\n[Share](https:\/\/stackoverflow.com\/a\/14529489 \"Short permalink to this answer\")\n\nShare a link to this answer\n\nCopy link\n\n[CC BY-SA 4.0](https:\/\/creativecommons.org\/licenses\/by-sa\/4.0\/ \"The current license for this post: CC BY-SA 4.0\")\n\n[Improve this answer](https:\/\/stackoverflow.com\/posts\/14529489\/edit)\n\nFollow\n\nFollow this answer to receive notifications\n\n[edited Jun 14 at 10:52](https:\/\/stackoverflow.com\/posts\/14529489\/revisions \"show all edits to this post\")\n\n[![Marco Sulla's user avatar](https:\/\/i.sstatic.net\/uZ8dA.gif?s=64)](https:\/\/stackoverflow.com\/users\/1763602\/marco-sulla)\n\n[Marco Sulla](https:\/\/stackoverflow.com\/users\/1763602\/marco-sulla)\n\n16k1414 gold badges7272 silver badges109109 bronze badges\n\nanswered Jan 25, 2013 at 20:02\n\n[![sjtaheri's user avatar](https:\/\/www.gravatar.com\/avatar\/21ca31729513679a6123f14abbc11814?s=64&d=identicon&r=PG)](https:\/\/stackoverflow.com\/users\/958636\/sjtaheri)\n\n[sjtaheri](https:\/\/stackoverflow.com\/users\/958636\/sjtaheri)sjtaheri\n\n4,64733 gold badges2222 silver badges1515 bronze badges\n\n## 8 Comments\nAdd a comment\n\n[![](https:\/\/www.gravatar.com\/avatar\/6f3c10c61aaadfb82851ce2c47c0f663?s=48&d=identicon&r=PG)](https:\/\/stackoverflow.com\/users\/1644561\/avyfain)\n\navyfain\n\n[avyfain](https:\/\/stackoverflow.com\/users\/1644561\/avyfain)\n\n[Over a year ago](https:\/\/stackoverflow.com\/questions\/4690600\/python-exception-message-capturing#comment58913973_14529489)\n\nActually, you should use logger.error('Failed to do something: %s', str(e)) That way, if your logger level is above error it doesn't do the string interpolation.\n\n2016-02-24T23:19:25.153Z+00:00\n\n3\n\nReply\n\n- Copy link\n\nuser1898811\n\nuser1898811\n\n[Over a year ago](https:\/\/stackoverflow.com\/questions\/4690600\/python-exception-message-capturing#comment64051673_14529489)\n\n@avyfain - You are incorrect. The statement `logging.error('foo %s', str(e))` will always convert `e` to a string. To achieve what you are afterm you would use `logging.error('foo %s', e)` - thereby allowing the logging framework to do (or not do) the conversion.\n\n2016-07-11T23:29:03.627Z+00:00\n\n12\n\nReply\n\n- Copy link\n\n[![](https:\/\/www.gravatar.com\/avatar\/294c632c8748e7051c87b8961bc4f87e?s=48&d=identicon&r=PG)](https:\/\/stackoverflow.com\/users\/4973698\/mbdevpl)\n\nmbdevpl\n\n[mbdevpl](https:\/\/stackoverflow.com\/users\/4973698\/mbdevpl)\n\n[Over a year ago](https:\/\/stackoverflow.com\/questions\/4690600\/python-exception-message-capturing#comment65828406_14529489)\n\nAs an alternative for logging exception you could use `logger.exception(e)` instead. It will log the exception with traceback at the same `logging.ERROR` level.\n\n2016-08-31T09:51:02.817Z+00:00\n\n4\n\nReply\n\n- Copy link\n\n[![](https:\/\/www.gravatar.com\/avatar\/a0635ccd3a14b9c2801ccb180ee78abe?s=48&d=identicon&r=PG)](https:\/\/stackoverflow.com\/users\/1905506\/roy)\n\nRoy\n\n[Roy](https:\/\/stackoverflow.com\/users\/1905506\/roy)\n\n[Over a year ago](https:\/\/stackoverflow.com\/questions\/4690600\/python-exception-message-capturing#comment85530426_14529489)\n\nI think he\/she meant \"except Exception, e:\"\n\n2018-03-13T18:34:44.353Z+00:00\n\n2\n\nReply\n\n- Copy link\n\n[![](https:\/\/lh4.googleusercontent.com\/-YxVDude9eeE\/AAAAAAAAAAI\/AAAAAAAABTM\/i60VX3LXLQQ\/s48-rj\/photo.jpg)](https:\/\/stackoverflow.com\/users\/7470925\/jeannej)\n\njeannej\n\n[jeannej](https:\/\/stackoverflow.com\/users\/7470925\/jeannej)\n\n[Over a year ago](https:\/\/stackoverflow.com\/questions\/4690600\/python-exception-message-capturing#comment88835998_14529489)\n\nBeware that `except BaseException` and `except Exception` are not on the same level. `except Exception` does work in Python3, but it won't catch `KeyboardInterrupt` for instance (which can be very convenient if you want to be able to interrupt your code!), whereas `BaseException` catches any exception. See [this link](https:\/\/docs.python.org\/3\/library\/exceptions.html#exception-hierarchy) for the hierarchy of exceptions.\n\n2018-06-18T21:52:36.5Z+00:00\n\n21\n\nReply\n\n- Copy link\n\nAdd a comment\n\n\\|\n\nShow 3 more comments\n\nThis answer is useful\n\n104\n\nSave this answer.\n\nShow activity on this post.\n\nIf you want the error class, error message, and stack trace, use **`sys.exc_info()`**.\n\nMinimal working code with some formatting:\n```\nimport sys\nimport traceback\n\ntry:\n    ans = 1\/0\nexcept BaseException as ex:\n    # Get current system exception\n    ex_type, ex_value, ex_traceback = sys.exc_info()\n\n    # Extract unformatter stack traces as tuples\n    trace_back = traceback.extract_tb(ex_traceback)\n\n    # Format stacktrace\n    stack_trace = list()\n\n    for trace in trace_back:\n        stack_trace.append(\"File : %s , Line : %d, Func.Name : %s, Message : %s\" % (trace[0], trace[1], trace[2], trace[3]))\n\n    print(\"Exception type : %s \" % ex_type.__name__)\n    print(\"Exception message : %s\" %ex_value)\n    print(\"Stack trace : %s\" %stack_trace)\n```\nWhich gives the following output:\n```\nException type : ZeroDivisionError\nException message : division by zero\nStack trace : ['File : .\\\\test.py , Line : 5, Func.Name : <module>, Message : ans = 1\/0']\n```\nThe function **[sys.exc\\_info()](https:\/\/docs.python.org\/3.6\/library\/sys.html#sys.exc_info)** gives you details about the most recent exception. It returns a tuple of `(type, value, traceback)`.\n\n`traceback` is an instance of traceback object. You can format the trace with the methods provided. More can be found in the [traceback documentation](https:\/\/docs.python.org\/3.6\/library\/traceback.html) .\n\n[Share](https:\/\/stackoverflow.com\/a\/49613561 \"Short permalink to this answer\")\n\nShare a link to this answer\n\nCopy link\n\n[CC BY-SA 4.0](https:\/\/creativecommons.org\/licenses\/by-sa\/4.0\/ \"The current license for this post: CC BY-SA 4.0\")\n\n[Improve this answer](https:\/\/stackoverflow.com\/posts\/49613561\/edit)\n\nFollow\n\nFollow this answer to receive notifications\n\n[edited Aug 18, 2020 at 1:09](https:\/\/stackoverflow.com\/posts\/49613561\/revisions \"show all edits to this post\")\n\n[![ziedaniel1's user avatar](https:\/\/www.gravatar.com\/avatar\/3c5f722459435619bf3d6ea4d19af66c?s=64&d=identicon&r=PG)](https:\/\/stackoverflow.com\/users\/248522\/ziedaniel1)\n\n[ziedaniel1](https:\/\/stackoverflow.com\/users\/248522\/ziedaniel1)\n\n36011 silver badge99 bronze badges\n\nanswered Apr 2, 2018 at 14:55\n\n[![Kavindu Dodanduwa's user avatar](https:\/\/i.sstatic.net\/nSxMo0VP.jpg?s=64)](https:\/\/stackoverflow.com\/users\/3197055\/kavindu-dodanduwa)\n\n[Kavindu Dodanduwa](https:\/\/stackoverflow.com\/users\/3197055\/kavindu-dodanduwa)Kavindu Dodanduwa\n\n13\\.2k44 gold badges3838 silver badges4949 bronze badges\n\n## 3 Comments\nAdd a comment\n\n[![](https:\/\/www.gravatar.com\/avatar\/8bbc94977312d285045b2412257b6cb8?s=48&d=identicon&r=PG)](https:\/\/stackoverflow.com\/users\/55075\/kenorb)\n\nkenorb\n\n[kenorb](https:\/\/stackoverflow.com\/users\/55075\/kenorb)\n\n[Over a year ago](https:\/\/stackoverflow.com\/questions\/4690600\/python-exception-message-capturing#comment88732934_49613561)\n\nUsing `e.__class__.__name__` can return the exception class as well.\n\n2018-06-14T20:13:48.93Z+00:00\n\n6\n\nReply\n\n- Copy link\n\n[![](https:\/\/i.sstatic.net\/301nx.png?s=64)](https:\/\/stackoverflow.com\/users\/9330812\/madhatter)\n\nMadHatter\n\n[MadHatter](https:\/\/stackoverflow.com\/users\/9330812\/madhatter)\n\n[Over a year ago](https:\/\/stackoverflow.com\/questions\/4690600\/python-exception-message-capturing#comment129501915_49613561)\n\nThanks for the info, finally decide to use `self.logger.info(\"{} - {}\".format(type(error).__name__, str(error)))`, works like a charm.\n\n2022-08-12T07:25:49.557Z+00:00\n\n1\n\nReply\n\n- Copy link\n\n[![](https:\/\/www.gravatar.com\/avatar\/65567f5e847c6761b1fe382937258466?s=48&d=identicon&r=PG)](https:\/\/stackoverflow.com\/users\/849669\/somebody)\n\nSomebody\n\n[Somebody](https:\/\/stackoverflow.com\/users\/849669\/somebody)\n\n[Over a year ago](https:\/\/stackoverflow.com\/questions\/4690600\/python-exception-message-capturing#comment136481033_49613561)\n\nwoah, what a mess... so much work to just get error stack trace...\n\n2023-11-03T13:02:47.99Z+00:00\n\n2\n\nReply\n\n- Copy link\n\nAdd a comment\n\nThis answer is useful\n\n71\n\nSave this answer.\n\nShow activity on this post.\n\nThere are some cases where you can use the **e.message** or **e.messages**.. But it does not work in all cases. Anyway the more safe is to use the **str(e)**\n```\ntry:\n  ...\nexcept Exception as e:\n  print(e.message)\n```\n\n[Share](https:\/\/stackoverflow.com\/a\/43453668 \"Short permalink to this answer\")\n\nShare a link to this answer\n\nCopy link\n\n[CC BY-SA 3.0](https:\/\/creativecommons.org\/licenses\/by-sa\/3.0\/ \"The current license for this post: CC BY-SA 3.0\")\n\n[Improve this answer](https:\/\/stackoverflow.com\/posts\/43453668\/edit)\n\nFollow\n\nFollow this answer to receive notifications\n\n[edited Apr 2, 2018 at 9:11](https:\/\/stackoverflow.com\/posts\/43453668\/revisions \"show all edits to this post\")\n\nanswered Apr 17, 2017 at 14:43\n\n[![Slipstream's user avatar](https:\/\/i.sstatic.net\/I4Nbj.jpg?s=64)](https:\/\/stackoverflow.com\/users\/1866389\/slipstream)\n\n[Slipstream](https:\/\/stackoverflow.com\/users\/1866389\/slipstream)Slipstream\n\n15\\.1k44 gold badges6161 silver badges4747 bronze badges\n\n## 3 Comments\nAdd a comment\n\n[![](https:\/\/www.gravatar.com\/avatar\/b51b021fec2ca6f8eb22c629907ee2a8?s=48&d=identicon&r=PG)](https:\/\/stackoverflow.com\/users\/466011\/epalm)\n\nepalm\n\n[epalm](https:\/\/stackoverflow.com\/users\/466011\/epalm)\n\n[Over a year ago](https:\/\/stackoverflow.com\/questions\/4690600\/python-exception-message-capturing#comment74061301_43453668)\n\nThe problem with this is, for example, if you `except Exception as e`, and `e` is an `IOError`, you get `e.errno`, `e.filename`, and `e.strerror`, but apparently no `e.message` (at least in Python 2.7.12). If you want to capture the error message, use `str(e)`, as in the other answers.\n\n2017-04-19T18:28:35.28Z+00:00\n\n67\n\nReply\n\n- Copy link\n\n[![](https:\/\/www.gravatar.com\/avatar\/529a4b8512718a449afa4889a7d9a761?s=48&d=identicon&r=PG&f=y&so-version=2)](https:\/\/stackoverflow.com\/users\/12696307\/herii)\n\nHerii\n\n[Herii](https:\/\/stackoverflow.com\/users\/12696307\/herii)\n\n[Over a year ago](https:\/\/stackoverflow.com\/questions\/4690600\/python-exception-message-capturing#comment105561813_43453668)\n\n@epalm What if you catch the IOError before Exception?\n\n2020-01-12T14:21:25.06Z+00:00\n\n0\n\nReply\n\n- Copy link\n\n[![](https:\/\/www.gravatar.com\/avatar\/28ee35cd7b2ad66f0e892cf25d809669?s=48&d=identicon&r=PG)](https:\/\/stackoverflow.com\/users\/6526918\/hosseynjf)\n\nHosseyNJF\n\n[HosseyNJF](https:\/\/stackoverflow.com\/users\/6526918\/hosseynjf)\n\n[Over a year ago](https:\/\/stackoverflow.com\/questions\/4690600\/python-exception-message-capturing#comment108459652_43453668)\n\n@HeribertoJuárez Why catch special cases while you can simply cast it to string?\n\n2020-04-19T18:13:51.95Z+00:00\n\n2\n\nReply\n\n- Copy link\n\nAdd a comment\n\nThis answer is useful\n\n55\n\nSave this answer.\n\nShow activity on this post.\n\nUpdating this to something simpler for logger (works for both python 2 and 3). You do not need traceback module.\n```\nimport logging\n\nlogger = logging.Logger('catch_all')\n\ndef catchEverythingInLog():\n    try:\n        ... do something ...\n    except Exception as e:\n        logger.error(e, exc_info=True)\n        ... exception handling ...\n```\nThis is now the old way (though still works):\n```\nimport sys, traceback\n\ndef catchEverything():\n    try:\n        ... some operation(s) ...\n    except:\n        exc_type, exc_value, exc_traceback = sys.exc_info()\n        ... exception handling ...\n```\nexc\\_value is the error message.\n\n[Share](https:\/\/stackoverflow.com\/a\/19101737 \"Short permalink to this answer\")\n\nShare a link to this answer\n\nCopy link\n\n[CC BY-SA 3.0](https:\/\/creativecommons.org\/licenses\/by-sa\/3.0\/ \"The current license for this post: CC BY-SA 3.0\")\n\n[Improve this answer](https:\/\/stackoverflow.com\/posts\/19101737\/edit)\n\nFollow\n\nFollow this answer to receive notifications\n\n[edited Oct 30, 2016 at 22:59](https:\/\/stackoverflow.com\/posts\/19101737\/revisions \"show all edits to this post\")\n\nanswered Sep 30, 2013 at 18:58\n\n[![berniey's user avatar](https:\/\/www.gravatar.com\/avatar\/2ff4f28cf6b7449a5a88d15042cba1b0?s=64&d=identicon&r=PG)](https:\/\/stackoverflow.com\/users\/1268052\/berniey)\n\n[berniey](https:\/\/stackoverflow.com\/users\/1268052\/berniey)berniey\n\n2,96211 gold badge2020 silver badges88 bronze badges\n\n## 2 Comments\nAdd a comment\n\n[![](https:\/\/www.gravatar.com\/avatar\/455ec540f6081646ee8a12100c5c7b38?s=48&d=identicon&r=PG&f=y&so-version=2)](https:\/\/stackoverflow.com\/users\/4077356\/sulimmesh)\n\nsulimmesh\n\n[sulimmesh](https:\/\/stackoverflow.com\/users\/4077356\/sulimmesh)\n\n[Over a year ago](https:\/\/stackoverflow.com\/questions\/4690600\/python-exception-message-capturing#comment60257170_19101737)\n\nThis would be my preferred method. Just printing the string is useful for logging I suppose, but if I need to do anything with that information I need more than just a string.\n\n2016-03-30T18:31:16.12Z+00:00\n\n3\n\nReply\n\n- Copy link\n\n[![](https:\/\/www.gravatar.com\/avatar\/22361102c97f14fe158361621d811d0a?s=48&d=identicon&r=PG)](https:\/\/stackoverflow.com\/users\/2369544\/starikoff)\n\nstarikoff\n\n[starikoff](https:\/\/stackoverflow.com\/users\/2369544\/starikoff)\n\n[Over a year ago](https:\/\/stackoverflow.com\/questions\/4690600\/python-exception-message-capturing#comment92482043_19101737)\n\nYou don't need to 'import traceback' in the second example, right?\n\n2018-10-12T13:13:46.413Z+00:00\n\n3\n\nReply\n\n- Copy link\n\nThis answer is useful\n\n27\n\nSave this answer.\n\nShow activity on this post.\n\nUsing `str(e)` or `repr(e)` to represent the exception, you won't get the actual stack trace, so it is not helpful to find where the exception is.\n\nAfter reading other answers and the logging package doc, the following two ways works great to print the actual stack trace for easier debugging:\n\n# use `logger.debug()` with parameter `exc_info`\n```\ntry:\n    # my code\nexcept SomeError as e:\n    logger.debug(e, exc_info=True)\n```\n# use `logger.exception()`\nor we can directly use `logger.exception()` to print the exception.\n```\ntry:\n    # my code\nexcept SomeError as e:\n    logger.exception(e)\n```\n\n[Share](https:\/\/stackoverflow.com\/a\/61441684 \"Short permalink to this answer\")\n\nShare a link to this answer\n\nCopy link\n\n[CC BY-SA 4.0](https:\/\/creativecommons.org\/licenses\/by-sa\/4.0\/ \"The current license for this post: CC BY-SA 4.0\")\n\n[Improve this answer](https:\/\/stackoverflow.com\/posts\/61441684\/edit)\n\nFollow\n\nFollow this answer to receive notifications\n\n[edited Aug 13, 2020 at 17:55](https:\/\/stackoverflow.com\/posts\/61441684\/revisions \"show all edits to this post\")\n\n[![Vikramaditya Gaonkar's user avatar](https:\/\/i.sstatic.net\/jly03.jpg?s=64)](https:\/\/stackoverflow.com\/users\/2542835\/vikramaditya-gaonkar)\n\n[Vikramaditya Gaonkar](https:\/\/stackoverflow.com\/users\/2542835\/vikramaditya-gaonkar)\n\n7371111 silver badges2424 bronze badges\n\nanswered Apr 26, 2020 at 13:34\n\n[![jdhao's user avatar](https:\/\/i.sstatic.net\/zto2h.jpg?s=64)](https:\/\/stackoverflow.com\/users\/6064933\/jdhao)\n\n[jdhao](https:\/\/stackoverflow.com\/users\/6064933\/jdhao)jdhao\n\n29\\.4k2323 gold badges158158 silver badges323323 bronze badges\n\n## Comments\nAdd a comment\n\nThis answer is useful\n\n24\n\nSave this answer.\n\nShow activity on this post.\n\nYou can use `logger.exception(\"msg\")` for logging exception with traceback:\n```\ntry:\n    #your code\nexcept Exception as e:\n    logger.exception('Failed: ' + str(e))\n```\n\n[Share](https:\/\/stackoverflow.com\/a\/28431302 \"Short permalink to this answer\")\n\nShare a link to this answer\n\nCopy link\n\n[CC BY-SA 3.0](https:\/\/creativecommons.org\/licenses\/by-sa\/3.0\/ \"The current license for this post: CC BY-SA 3.0\")\n\n[Improve this answer](https:\/\/stackoverflow.com\/posts\/28431302\/edit)\n\nFollow\n\nFollow this answer to receive notifications\n\nanswered Feb 10, 2015 at 12:09\n\n[![Peter's user avatar](https:\/\/www.gravatar.com\/avatar\/82f6847dddbc87f676d4aebd7a7542d4?s=64&d=identicon&r=PG)](https:\/\/stackoverflow.com\/users\/1382867\/peter)\n\n[Peter](https:\/\/stackoverflow.com\/users\/1382867\/peter)Peter\n\n61911 gold badge88 silver badges1515 bronze badges\n\n## 2 Comments\nAdd a comment\n\n[![](https:\/\/i.sstatic.net\/jQIuY.jpg?s=64)](https:\/\/stackoverflow.com\/users\/699665\/markhu)\n\nMarkHu\n\n[MarkHu](https:\/\/stackoverflow.com\/users\/699665\/markhu)\n\n[Over a year ago](https:\/\/stackoverflow.com\/questions\/4690600\/python-exception-message-capturing#comment59236975_28431302)\n\nCoincidently, `e.msg` is the string representation of `Exception` class.\n\n2016-03-03T20:54:17.887Z+00:00\n\n0\n\nReply\n\n- Copy link\n\n[![](https:\/\/www.gravatar.com\/avatar\/294c632c8748e7051c87b8961bc4f87e?s=48&d=identicon&r=PG)](https:\/\/stackoverflow.com\/users\/4973698\/mbdevpl)\n\nmbdevpl\n\n[mbdevpl](https:\/\/stackoverflow.com\/users\/4973698\/mbdevpl)\n\n[Over a year ago](https:\/\/stackoverflow.com\/questions\/4690600\/python-exception-message-capturing#comment65828456_28431302)\n\nOr simply `logger.exception(e)`.\n\n2016-08-31T09:52:10.773Z+00:00\n\n6\n\nReply\n\n- Copy link\n\nThis answer is useful\n\n21\n\nSave this answer.\n\nShow activity on this post.\n\nAfter python 3.6, you can use formatted string literal. It's neat! (<https:\/\/docs.python.org\/3\/whatsnew\/3.6.html#whatsnew36-pep498>)\n```\ntry\n ...\nexcept Exception as e:\n    logger.error(f\"Failed to upload to ftp: {e}\")\n```\n\n[Share](https:\/\/stackoverflow.com\/a\/52206134 \"Short permalink to this answer\")\n\nShare a link to this answer\n\nCopy link\n\n[CC BY-SA 4.0](https:\/\/creativecommons.org\/licenses\/by-sa\/4.0\/ \"The current license for this post: CC BY-SA 4.0\")\n\n[Improve this answer](https:\/\/stackoverflow.com\/posts\/52206134\/edit)\n\nFollow\n\nFollow this answer to receive notifications\n\nanswered Sep 6, 2018 at 14:16\n\n[![Chuan Ma's user avatar](https:\/\/www.gravatar.com\/avatar\/b9c1eafa90f9b895aff24750f7be1cbc?s=64&d=identicon&r=PG)](https:\/\/stackoverflow.com\/users\/1370036\/chuan-ma)\n\n[Chuan Ma](https:\/\/stackoverflow.com\/users\/1370036\/chuan-ma)Chuan Ma\n\n9,91422 gold badges4949 silver badges3737 bronze badges\n\n## Comments\nAdd a comment\n\nThis answer is useful\n\n14\n\nSave this answer.\n\nShow activity on this post.\n\nIf you want to see the original error message, (*file* & *line number*)\n```\nimport traceback\ntry:\n    print(3\/0)\nexcept Exception as e:    \n    traceback.print_exc()\n```\nThis will show you the same error message as if you didn't use `try-except`.\n\n[Share](https:\/\/stackoverflow.com\/a\/70377329 \"Short permalink to this answer\")\n\nShare a link to this answer\n\nCopy link\n\n[CC BY-SA 4.0](https:\/\/creativecommons.org\/licenses\/by-sa\/4.0\/ \"The current license for this post: CC BY-SA 4.0\")\n\n[Improve this answer](https:\/\/stackoverflow.com\/posts\/70377329\/edit)\n\nFollow\n\nFollow this answer to receive notifications\n\nanswered Dec 16, 2021 at 10:22\n\n[![starriet 차주녕's user avatar](https:\/\/i.sstatic.net\/WpcbD.jpg?s=64)](https:\/\/stackoverflow.com\/users\/10027592\/starriet-%EC%B0%A8%EC%A3%BC%EB%85%95)\n\n[starriet 차주녕](https:\/\/stackoverflow.com\/users\/10027592\/starriet-%EC%B0%A8%EC%A3%BC%EB%85%95)starriet 차주녕\n\n4,1963333 silver badges3333 bronze badges\n\n## Comments\nAdd a comment\n\nThis answer is useful\n\n13\n\nSave this answer.\n\nShow activity on this post.\n\nYou can try specifying the BaseException type explicitly. However, this will only catch derivatives of BaseException. While this includes all implementation-provided exceptions, it is also possibly to raise arbitrary old-style classes.\n```\ntry:\n  do_something()\nexcept BaseException, e:\n  logger.error('Failed to do something: ' + str(e))\n```\n\n[Share](https:\/\/stackoverflow.com\/a\/4690647 \"Short permalink to this answer\")\n\nShare a link to this answer\n\nCopy link\n\n[CC BY-SA 2.5](https:\/\/creativecommons.org\/licenses\/by-sa\/2.5\/ \"The current license for this post: CC BY-SA 2.5\")\n\n[Improve this answer](https:\/\/stackoverflow.com\/posts\/4690647\/edit)\n\nFollow\n\nFollow this answer to receive notifications\n\nanswered Jan 14, 2011 at 11:40\n\n[![Heini Høgnason's user avatar](https:\/\/www.gravatar.com\/avatar\/752cb65dfd817b97837b42b3cd5e71d6?s=64&d=identicon&r=PG)](https:\/\/stackoverflow.com\/users\/428329\/heini-h%C3%B8gnason)\n\n[Heini Høgnason](https:\/\/stackoverflow.com\/users\/428329\/heini-h%C3%B8gnason)Heini Høgnason\n\n67744 silver badges1010 bronze badges\n\n## Comments\nAdd a comment\n\nThis answer is useful\n\n7\n\nSave this answer.\n\nShow activity on this post.\n\nfor the future strugglers, in python 3.8.2(and maybe a few versions before that), the syntax is\n```\nexcept Attribute as e:\n    print(e)\n```\n\n[Share](https:\/\/stackoverflow.com\/a\/60793229 \"Short permalink to this answer\")\n\nShare a link to this answer\n\nCopy link\n\n[CC BY-SA 4.0](https:\/\/creativecommons.org\/licenses\/by-sa\/4.0\/ \"The current license for this post: CC BY-SA 4.0\")\n\n[Improve this answer](https:\/\/stackoverflow.com\/posts\/60793229\/edit)\n\nFollow\n\nFollow this answer to receive notifications\n\nanswered Mar 21, 2020 at 21:00\n\n[![syter's user avatar](https:\/\/lh3.googleusercontent.com\/-hm5jw7GSYQo\/AAAAAAAAAAI\/AAAAAAAAD9g\/PICrj7hRJ4s\/s64-rj\/photo.jpg)](https:\/\/stackoverflow.com\/users\/11723929\/syter)\n\n[syter](https:\/\/stackoverflow.com\/users\/11723929\/syter)syter\n\n14522 silver badges1111 bronze badges\n\n## Comments\nAdd a comment\n\nThis answer is useful\n\n7\n\nSave this answer.\n\nShow activity on this post.\n\nThere is also a way to get the raw values passed to the exception class without having to change the content type.\n\nFor e.g I raise type codes with error messages in one of my frameworks.\n```\ntry:\n    # TODO: Your exceptional code here \n    raise Exception((1, \"Your code wants the program to exit\"))\n\nexcept Exception as e:\n    print(\"Exception Type:\", e.args[0][0], \"Message:\", e.args[0][1])\n```\nOutput\n```\nException Type: 1 Message: 'Your code wants the program to exit'\n```\n\n[Share](https:\/\/stackoverflow.com\/a\/75269630 \"Short permalink to this answer\")\n\nShare a link to this answer\n\nCopy link\n\n[CC BY-SA 4.0](https:\/\/creativecommons.org\/licenses\/by-sa\/4.0\/ \"The current license for this post: CC BY-SA 4.0\")\n\n[Improve this answer](https:\/\/stackoverflow.com\/posts\/75269630\/edit)\n\nFollow\n\nFollow this answer to receive notifications\n\nanswered Jan 28, 2023 at 17:44\n\n[![Illegal Operator's user avatar](https:\/\/i.sstatic.net\/8G67M.jpg?s=64)](https:\/\/stackoverflow.com\/users\/1647394\/illegal-operator)\n\n[Illegal Operator](https:\/\/stackoverflow.com\/users\/1647394\/illegal-operator)Illegal Operator\n\n76188 silver badges1515 bronze badges\n\n## Comments\nAdd a comment\n\nThis answer is useful\n\n6\n\nSave this answer.\n\nShow activity on this post.\n\nIn Python 3, `str(ex)` gives us the error message. You could use `repr(ex)` to get the full text, including the name of the exception raised.\n```\narr = [\"a\", \"b\", \"c\"]\n\ntry:\n    print(arr[5])\nexcept IndexError as ex:\n    print(repr(ex)) # IndexError: list index out of range\n    print(str(ex)) # list index out of range\n```\n\n[Share](https:\/\/stackoverflow.com\/a\/75228768 \"Short permalink to this answer\")\n\nShare a link to this answer\n\nCopy link\n\n[CC BY-SA 4.0](https:\/\/creativecommons.org\/licenses\/by-sa\/4.0\/ \"The current license for this post: CC BY-SA 4.0\")\n\n[Improve this answer](https:\/\/stackoverflow.com\/posts\/75228768\/edit)\n\nFollow\n\nFollow this answer to receive notifications\n\nanswered Jan 25, 2023 at 0:51\n\n[![Tomisin Abiodun's user avatar](https:\/\/graph.facebook.com\/1863404813688471\/picture?type=large)](https:\/\/stackoverflow.com\/users\/8921643\/tomisin-abiodun)\n\n[Tomisin Abiodun](https:\/\/stackoverflow.com\/users\/8921643\/tomisin-abiodun)Tomisin Abiodun\n\n12144 silver badges44 bronze badges\n\n## Comments\nAdd a comment\n\nThis answer is useful\n\n5\n\nSave this answer.\n\nShow activity on this post.\n\nUse str(ex) to print execption\n```\ntry:\n   #your code\nexcept ex:\n   print(str(ex))\n```\n\n[Share](https:\/\/stackoverflow.com\/a\/50584719 \"Short permalink to this answer\")\n\nShare a link to this answer\n\nCopy link\n\n[CC BY-SA 4.0](https:\/\/creativecommons.org\/licenses\/by-sa\/4.0\/ \"The current license for this post: CC BY-SA 4.0\")\n\n[Improve this answer](https:\/\/stackoverflow.com\/posts\/50584719\/edit)\n\nFollow\n\nFollow this answer to receive notifications\n\nanswered May 29, 2018 at 12:42\n\n[![Niraj Trivedi's user avatar](https:\/\/i.sstatic.net\/eq0HA.png?s=64)](https:\/\/stackoverflow.com\/users\/3839344\/niraj-trivedi)\n\n[Niraj Trivedi](https:\/\/stackoverflow.com\/users\/3839344\/niraj-trivedi)Niraj Trivedi\n\n2,9402727 silver badges2727 bronze badges\n\n## Comments\nAdd a comment\n\nThis answer is useful\n\n0\n\nSave this answer.\n\nShow activity on this post.\n\nThere were already useful answers provided. Just a small additional hint located between proposals to use *sys.exc\\_info()* and to use *traceback.print\\_exc()* :\n\nThere is a way to **capture easily** the original exception trace **inside the script** if saving to log-file is not needed (or before saving to file):\n```\nimport traceback\n\ntry:\n    do_something # your code, which could cause exception\nexcept Exception as e:\n    exception_details_list = traceback.format_exc()\n\n    print(exception_details_list) # just to show the retrieved exception_details_list\n```\n*Note: there are also further useful functions available by [traceback](https:\/\/docs.python.org\/3\/library\/traceback.html) (e.g. to capture only limited information about exception).*\n\n[Share](https:\/\/stackoverflow.com\/a\/79295002 \"Short permalink to this answer\")\n\nShare a link to this answer\n\nCopy link\n\n[CC BY-SA 4.0](https:\/\/creativecommons.org\/licenses\/by-sa\/4.0\/ \"The current license for this post: CC BY-SA 4.0\")\n\n[Improve this answer](https:\/\/stackoverflow.com\/posts\/79295002\/edit)\n\nFollow\n\nFollow this answer to receive notifications\n\nanswered Dec 19, 2024 at 16:37\n\n[![Dr.CKYHC's user avatar](https:\/\/lh4.googleusercontent.com\/-kWEDFCqdPhw\/AAAAAAAAAAI\/AAAAAAAAAAA\/AMZuuclFrD9o5RJ9jFimfTGGmEVDPoYmYw\/s96-c\/s64-rj\/photo.jpg)](https:\/\/stackoverflow.com\/users\/19041857\/dr-ckyhc)\n\n[Dr.CKYHC](https:\/\/stackoverflow.com\/users\/19041857\/dr-ckyhc)Dr.CKYHC\n\n10555 bronze badges\n\n## Comments\nAdd a comment\n\nThis answer is useful\n\n\\-1\n\nSave this answer.\n\nShow activity on this post.\n\nThe easiest way to do this is available through the [Polog](https:\/\/github.com\/pomponchik\/polog) library. Import it:\n```\n$ pip install polog\n```\nAnd use:\n```\nfrom polog import log, config, file_writer\n\n\nconfig.add_handlers(file_writer('file.log'))\n\nwith log('message').suppress():\n    do_something()\n```\nNote how much less space the code has taken up vertically: only 2 lines.\n\n[Share](https:\/\/stackoverflow.com\/a\/74210713 \"Short permalink to this answer\")\n\nShare a link to this answer\n\nCopy link\n\n[CC BY-SA 4.0](https:\/\/creativecommons.org\/licenses\/by-sa\/4.0\/ \"The current license for this post: CC BY-SA 4.0\")\n\n[Improve this answer](https:\/\/stackoverflow.com\/posts\/74210713\/edit)\n\nFollow\n\nFollow this answer to receive notifications\n\nanswered Oct 26, 2022 at 15:51\n\n[![Evgeniy Blinov's user avatar](https:\/\/lh3.googleusercontent.com\/a-\/AOh14GiTorduX2qPJYDBrrs4dbMsPj5XKJZp-aqInCLHTA=k-s64)](https:\/\/stackoverflow.com\/users\/14522393\/evgeniy-blinov)\n\n[Evgeniy Blinov](https:\/\/stackoverflow.com\/users\/14522393\/evgeniy-blinov)Evgeniy Blinov\n\n40744 silver badges33 bronze badges\n\n## Comments\nAdd a comment\n\n**[Protected question](https:\/\/stackoverflow.com\/help\/privileges\/protect-questions)**. 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Boilerpipe Text	If you want the error class, error message, and stack trace, use sys.exc_info() . Minimal working code with some formatting: import sys import traceback try : ans = 1 / 0 except BaseException as ex: ex_type, ex_value, ex_traceback = sys.exc_info() trace_back = traceback.extract_tb(ex_traceback) stack_trace = list () for trace in trace_back: stack_trace.append( "File : %s , Line : %d, Func.Name : %s, Message : %s" % (trace[ 0 ], trace[ 1 ], trace[ 2 ], trace[ 3 ])) print ( "Exception type : %s " % ex_type.__name__) print ( "Exception message : %s" %ex_value) print ( "Stack trace : %s" %stack_trace) Which gives the following output: Exception type : ZeroDivisionError Exception message : division by zero Stack trace : [ 'File : .\\test.py , Line : 5, Func.Name : <module>, Message : ans = 1/0' ] The function sys.exc_info() gives you details about the most recent exception. It returns a tuple of (type, value, traceback) . traceback is an instance of traceback object. You can format the trace with the methods provided. More can be found in the traceback documentation .
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[Learn more about Teams](https://stackoverflow.co/teams/) # ![Illustration of upvote icon after it is clicked](https://cdn.sstatic.net/Img/modal/img-upvote.png?v=fce73bd9724d) # Hang on, you can't upvote just yet. You'll need to complete a few actions and gain 15 reputation points before being able to upvote. Upvoting indicates when questions and answers are useful. [What's reputation and how do I get it?](https://stackoverflow.com/help/whats-reputation) Instead, you can save this post to reference later. Save this post for later Not now # ![Illustration of upvote icon after it is clicked](https://cdn.sstatic.net/Img/modal/img-free-votes.png?v=1c5aa3dac50b) # Thanks for your vote! You now have 5 free votes weekly. Free votes - count toward the total vote score - does not give reputation to the author Continue to help good content that is interesting, well-researched, and useful, rise to the top! To gain full voting privileges, [earn reputation](https://stackoverflow.com/help/whats-reputation). Got it\! Go to help center to learn more # [python exception message capturing](https://stackoverflow.com/questions/4690600/python-exception-message-capturing) [Ask Question](https://stackoverflow.com/questions/ask) Asked 14 years, 9 months ago Modified [3 months ago](https://stackoverflow.com/questions/4690600/python-exception-message-capturing?lastactivity "2025-06-14 10:52:22Z") Viewed 1.6m times This question shows research effort; it is useful and clear 970 Save this question. Show activity on this post. ``` import ftplib import urllib2 import os import logging logger = logging.getLogger('ftpuploader') hdlr = logging.FileHandler('ftplog.log') formatter = logging.Formatter('%(asctime)s %(levelname)s %(message)s') hdlr.setFormatter(formatter) logger.addHandler(hdlr) logger.setLevel(logging.INFO) FTPADDR = "some ftp address" def upload_to_ftp(con, filepath): try: f = open(filepath,'rb') # file to send con.storbinary('STOR '+ filepath, f) # Send the file f.close() # Close file and FTP logger.info('File successfully uploaded to '+ FTPADDR) except, e: logger.error('Failed to upload to ftp: '+ str(e)) ``` This doesn't seem to work, I get syntax error, what is the proper way of doing this for logging all kind of exceptions to a file - [python](https://stackoverflow.com/questions/tagged/python "show questions tagged 'python'") - [exception](https://stackoverflow.com/questions/tagged/exception "show questions tagged 'exception'") - [logging](https://stackoverflow.com/questions/tagged/logging "show questions tagged 'logging'") - [except](https://stackoverflow.com/questions/tagged/except "show questions tagged 'except'") - [python-logging](https://stackoverflow.com/questions/tagged/python-logging "show questions tagged 'python-logging'") [Share](https://stackoverflow.com/q/4690600 "Short permalink to this question") Share a link to this question Copy link [CC BY-SA 2.5](https://creativecommons.org/licenses/by-sa/2.5/ "The current license for this post: CC BY-SA 2.5") [Improve this question](https://stackoverflow.com/posts/4690600/edit) Follow Follow this question to receive notifications [edited Mar 24, 2023 at 8:20](https://stackoverflow.com/posts/4690600/revisions "show all edits to this post") [![vvvvv's user avatar](https://i.sstatic.net/fzsuf.jpg?s=64)](https://stackoverflow.com/users/5446749/vvvvv) [vvvvv](https://stackoverflow.com/users/5446749/vvvvv) 32\.8k1919 gold badges6969 silver badges103103 bronze badges asked Jan 14, 2011 at 11:33 [![Hellnar's user avatar](https://www.gravatar.com/avatar/eb149575d3dcbd3aca84cc4d9d689474?s=64&d=identicon&r=PG)](https://stackoverflow.com/users/151937/hellnar) [Hellnar](https://stackoverflow.com/users/151937/hellnar)Hellnar 65\.4k8282 gold badges209209 silver badges282282 bronze badges 5 - 3 Your indentation is broken. And omit the `,` after `except`. Sven Marnach – [Sven Marnach](https://stackoverflow.com/users/279627/sven-marnach "607,086 reputation") 2011-01-14 11:35:23 +00:00 [Commented Jan 14, 2011 at 11:35](https://stackoverflow.com/questions/4690600/python-exception-message-capturing#comment5173725_4690600) - 4 @SvenMarnach, if you omit the `,` after `except`, you'll get `global name 'e' is not defined`, which is not much better than wrong syntax. Val – [Val](https://stackoverflow.com/users/1083704/val "11,217 reputation") 2013-11-18 11:11:13 +00:00 [Commented Nov 18, 2013 at 11:11](https://stackoverflow.com/questions/4690600/python-exception-message-capturing#comment29855594_4690600) - 22 @Val: Should be `except Exception as e` or `except Exception, e`, depending on Python version. Sven Marnach – [Sven Marnach](https://stackoverflow.com/users/279627/sven-marnach "607,086 reputation") 2013-11-19 13:03:34 +00:00 [Commented Nov 19, 2013 at 13:03](https://stackoverflow.com/questions/4690600/python-exception-message-capturing#comment29900067_4690600) - 1 Probably it's somewhere around those 8 answers, but when you open a file, close part should never be inside the try statement, but either in a finally statement or wrapped by a with statement. user4396006 – user4396006 2018-08-24 17:13:39 +00:00 [Commented Aug 24, 2018 at 17:13](https://stackoverflow.com/questions/4690600/python-exception-message-capturing#comment90968641_4690600) - You can do it like UnitTests in requests package do [fixexception.com/requests/expected-exception](https://fixexception.com/requests/expected-exception/) Ivan Borshchov – [Ivan Borshchov](https://stackoverflow.com/users/3479125/ivan-borshchov "3,667 reputation") 2021-06-03 07:37:24 +00:00 [Commented Jun 3, 2021 at 7:37](https://stackoverflow.com/questions/4690600/python-exception-message-capturing#comment119869695_4690600) [Add a comment](https://stackoverflow.com/questions/4690600/python-exception-message-capturing "Use comments to ask for more information or suggest improvements. Avoid answering questions in comments.") \\| ## 16 Answers 16 Sorted by: [Reset to default](https://stackoverflow.com/questions/4690600/python-exception-message-capturing?answertab=scoredesc#tab-top) This answer is useful 1282 Save this answer. Show activity on this post. You have to define which type of exception you want to catch. So write `except Exception as e:` instead of `except, e:` for a general exception. Other possibility is to write your whole try/except code this way: ``` try: with open(filepath,'rb') as f: con.storbinary('STOR '+ filepath, f) logger.info('File successfully uploaded to '+ FTPADDR) except Exception as e: # works on python 3.x logger.error('Failed to upload to ftp: %s', repr(e)) ``` In older versions of Python 2.x, use `except Exception, e` instead of `except Exception as e`: ``` try: with open(filepath,'rb') as f: con.storbinary('STOR '+ filepath, f) logger.info('File successfully uploaded to %s', FTPADDR) except Exception, e: # works on python 2.x logger.error('Failed to upload to ftp: %s', repr(e)) ``` [Share](https://stackoverflow.com/a/4690655 "Short permalink to this answer") Share a link to this answer Copy link [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/ "The current license for this post: CC BY-SA 4.0") [Improve this answer](https://stackoverflow.com/posts/4690655/edit) Follow Follow this answer to receive notifications [edited Feb 20, 2024 at 6:07](https://stackoverflow.com/posts/4690655/revisions "show all edits to this post") [![akki's user avatar](https://www.gravatar.com/avatar/79fa9987d90325f3ab1f8c8c0f6d7565?s=64&d=identicon&r=PG&f=y&so-version=2)](https://stackoverflow.com/users/3061686/akki) [akki](https://stackoverflow.com/users/3061686/akki) 2,34222 gold badges2626 silver badges3939 bronze badges answered Jan 14, 2011 at 11:40 [![eumiro's user avatar](https://www.gravatar.com/avatar/b52c27e86c87d931e654d6a2d2cdf974?s=64&d=identicon&r=PG)](https://stackoverflow.com/users/449449/eumiro) [eumiro](https://stackoverflow.com/users/449449/eumiro)eumiro 214k3636 gold badges306306 silver badges263263 bronze badges Sign up to request clarification or add additional context in comments. ## 7 Comments Add a comment [![](https://i.sstatic.net/Urpin.jpg?s=64)](https://stackoverflow.com/users/3406170/whitebeard) whitebeard [whitebeard](https://stackoverflow.com/users/3406170/whitebeard) [Over a year ago](https://stackoverflow.com/questions/4690600/python-exception-message-capturing#comment64726919_4690655) repr(e) gives you the exception(and the message string); str(e) only gives the message string. 2016-07-30T11:28:13.283Z+00:00 295 Reply - Copy link [![](https://www.gravatar.com/avatar/294c632c8748e7051c87b8961bc4f87e?s=48&d=identicon&r=PG)](https://stackoverflow.com/users/4973698/mbdevpl) mbdevpl [mbdevpl](https://stackoverflow.com/users/4973698/mbdevpl) [Over a year ago](https://stackoverflow.com/questions/4690600/python-exception-message-capturing#comment65828373_4690655) As an alternative for logging exception you could use `logger.exception(e)` instead. It will log the exception with traceback at the same `logging.ERROR` level. 2016-08-31T09:50:18.497Z+00:00 23 Reply - Copy link [![](https://i.sstatic.net/2B6rV.png?s=64)](https://stackoverflow.com/users/1601580/charlie-parker) Charlie Parker [Charlie Parker](https://stackoverflow.com/users/1601580/charlie-parker) [Over a year ago](https://stackoverflow.com/questions/4690600/python-exception-message-capturing#comment81043343_4690655) `except Exception, e:` throws a Syntax error to me in python 3. Is this expected? 2017-11-01T04:12:47.11Z+00:00 10 Reply - Copy link [![](https://www.gravatar.com/avatar/b52c27e86c87d931e654d6a2d2cdf974?s=48&d=identicon&r=PG)](https://stackoverflow.com/users/449449/eumiro) eumiro [eumiro](https://stackoverflow.com/users/449449/eumiro) [Over a year ago](https://stackoverflow.com/questions/4690600/python-exception-message-capturing#comment81044650_4690655) @CharlieParker in Python3 write `except Exception as e:` 2017-11-01T05:38:42.383Z+00:00 38 Reply - Copy link [![](https://www.gravatar.com/avatar/df0d058549971acf574f2108e988d04f?s=48&d=identicon&r=PG&f=y&so-version=2)](https://stackoverflow.com/users/7517192/alex) Alex [Alex](https://stackoverflow.com/users/7517192/alex) [Over a year ago](https://stackoverflow.com/questions/4690600/python-exception-message-capturing#comment115644401_4690655) This is a bit misleading in 2020 because nobody has a Python version anymore that would require your first way (nobody uses Python \<2.7), yet your answer makes this seem like the default way to go in Python 2, even though the second way is virtually always better. You should just remove the first way and thereby make the answer clearer. 2020-12-22T15:23:06.177Z+00:00 4 Reply - Copy link Add a comment \\| Show 2 more comments This answer is useful 403 Save this answer. Show activity on this post. The syntax `except, e:` is no longer supported in python 3. Use the following instead. ``` try: do_something() except BaseException as e: logger.error('Failed to do something: %s', str(e)) ``` [Share](https://stackoverflow.com/a/14529489 "Short permalink to this answer") Share a link to this answer Copy link [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/ "The current license for this post: CC BY-SA 4.0") [Improve this answer](https://stackoverflow.com/posts/14529489/edit) Follow Follow this answer to receive notifications [edited Jun 14 at 10:52](https://stackoverflow.com/posts/14529489/revisions "show all edits to this post") [![Marco Sulla's user avatar](https://i.sstatic.net/uZ8dA.gif?s=64)](https://stackoverflow.com/users/1763602/marco-sulla) [Marco Sulla](https://stackoverflow.com/users/1763602/marco-sulla) 16k1414 gold badges7272 silver badges109109 bronze badges answered Jan 25, 2013 at 20:02 [![sjtaheri's user avatar](https://www.gravatar.com/avatar/21ca31729513679a6123f14abbc11814?s=64&d=identicon&r=PG)](https://stackoverflow.com/users/958636/sjtaheri) [sjtaheri](https://stackoverflow.com/users/958636/sjtaheri)sjtaheri 4,64733 gold badges2222 silver badges1515 bronze badges ## 8 Comments Add a comment [![](https://www.gravatar.com/avatar/6f3c10c61aaadfb82851ce2c47c0f663?s=48&d=identicon&r=PG)](https://stackoverflow.com/users/1644561/avyfain) avyfain [avyfain](https://stackoverflow.com/users/1644561/avyfain) [Over a year ago](https://stackoverflow.com/questions/4690600/python-exception-message-capturing#comment58913973_14529489) Actually, you should use logger.error('Failed to do something: %s', str(e)) That way, if your logger level is above error it doesn't do the string interpolation. 2016-02-24T23:19:25.153Z+00:00 3 Reply - Copy link user1898811 user1898811 [Over a year ago](https://stackoverflow.com/questions/4690600/python-exception-message-capturing#comment64051673_14529489) @avyfain - You are incorrect. The statement `logging.error('foo %s', str(e))` will always convert `e` to a string. To achieve what you are afterm you would use `logging.error('foo %s', e)` - thereby allowing the logging framework to do (or not do) the conversion. 2016-07-11T23:29:03.627Z+00:00 12 Reply - Copy link [![](https://www.gravatar.com/avatar/294c632c8748e7051c87b8961bc4f87e?s=48&d=identicon&r=PG)](https://stackoverflow.com/users/4973698/mbdevpl) mbdevpl [mbdevpl](https://stackoverflow.com/users/4973698/mbdevpl) [Over a year ago](https://stackoverflow.com/questions/4690600/python-exception-message-capturing#comment65828406_14529489) As an alternative for logging exception you could use `logger.exception(e)` instead. It will log the exception with traceback at the same `logging.ERROR` level. 2016-08-31T09:51:02.817Z+00:00 4 Reply - Copy link [![](https://www.gravatar.com/avatar/a0635ccd3a14b9c2801ccb180ee78abe?s=48&d=identicon&r=PG)](https://stackoverflow.com/users/1905506/roy) Roy [Roy](https://stackoverflow.com/users/1905506/roy) [Over a year ago](https://stackoverflow.com/questions/4690600/python-exception-message-capturing#comment85530426_14529489) I think he/she meant "except Exception, e:" 2018-03-13T18:34:44.353Z+00:00 2 Reply - Copy link [![](https://lh4.googleusercontent.com/-YxVDude9eeE/AAAAAAAAAAI/AAAAAAAABTM/i60VX3LXLQQ/s48-rj/photo.jpg)](https://stackoverflow.com/users/7470925/jeannej) jeannej [jeannej](https://stackoverflow.com/users/7470925/jeannej) [Over a year ago](https://stackoverflow.com/questions/4690600/python-exception-message-capturing#comment88835998_14529489) Beware that `except BaseException` and `except Exception` are not on the same level. `except Exception` does work in Python3, but it won't catch `KeyboardInterrupt` for instance (which can be very convenient if you want to be able to interrupt your code!), whereas `BaseException` catches any exception. See [this link](https://docs.python.org/3/library/exceptions.html#exception-hierarchy) for the hierarchy of exceptions. 2018-06-18T21:52:36.5Z+00:00 21 Reply - Copy link Add a comment \\| Show 3 more comments This answer is useful 104 Save this answer. Show activity on this post. If you want the error class, error message, and stack trace, use `sys.exc_info()`. Minimal working code with some formatting: ``` import sys import traceback try: ans = 1/0 except BaseException as ex: # Get current system exception ex_type, ex_value, ex_traceback = sys.exc_info() # Extract unformatter stack traces as tuples trace_back = traceback.extract_tb(ex_traceback) # Format stacktrace stack_trace = list() for trace in trace_back: stack_trace.append("File : %s , Line : %d, Func.Name : %s, Message : %s" % (trace[0], trace[1], trace[2], trace[3])) print("Exception type : %s " % ex_type.__name__) print("Exception message : %s" %ex_value) print("Stack trace : %s" %stack_trace) ``` Which gives the following output: ``` Exception type : ZeroDivisionError Exception message : division by zero Stack trace : ['File : .\\test.py , Line : 5, Func.Name : <module>, Message : ans = 1/0'] ``` The function [sys.exc\_info()](https://docs.python.org/3.6/library/sys.html#sys.exc_info) gives you details about the most recent exception. It returns a tuple of `(type, value, traceback)`. `traceback` is an instance of traceback object. You can format the trace with the methods provided. More can be found in the [traceback documentation](https://docs.python.org/3.6/library/traceback.html) . [Share](https://stackoverflow.com/a/49613561 "Short permalink to this answer") Share a link to this answer Copy link [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/ "The current license for this post: CC BY-SA 4.0") [Improve this answer](https://stackoverflow.com/posts/49613561/edit) Follow Follow this answer to receive notifications [edited Aug 18, 2020 at 1:09](https://stackoverflow.com/posts/49613561/revisions "show all edits to this post") [![ziedaniel1's user avatar](https://www.gravatar.com/avatar/3c5f722459435619bf3d6ea4d19af66c?s=64&d=identicon&r=PG)](https://stackoverflow.com/users/248522/ziedaniel1) [ziedaniel1](https://stackoverflow.com/users/248522/ziedaniel1) 36011 silver badge99 bronze badges answered Apr 2, 2018 at 14:55 [![Kavindu Dodanduwa's user avatar](https://i.sstatic.net/nSxMo0VP.jpg?s=64)](https://stackoverflow.com/users/3197055/kavindu-dodanduwa) [Kavindu Dodanduwa](https://stackoverflow.com/users/3197055/kavindu-dodanduwa)Kavindu Dodanduwa 13\.2k44 gold badges3838 silver badges4949 bronze badges ## 3 Comments Add a comment [![](https://www.gravatar.com/avatar/8bbc94977312d285045b2412257b6cb8?s=48&d=identicon&r=PG)](https://stackoverflow.com/users/55075/kenorb) kenorb [kenorb](https://stackoverflow.com/users/55075/kenorb) [Over a year ago](https://stackoverflow.com/questions/4690600/python-exception-message-capturing#comment88732934_49613561) Using `e.__class__.__name__` can return the exception class as well. 2018-06-14T20:13:48.93Z+00:00 6 Reply - Copy link [![](https://i.sstatic.net/301nx.png?s=64)](https://stackoverflow.com/users/9330812/madhatter) MadHatter [MadHatter](https://stackoverflow.com/users/9330812/madhatter) [Over a year ago](https://stackoverflow.com/questions/4690600/python-exception-message-capturing#comment129501915_49613561) Thanks for the info, finally decide to use `self.logger.info("{} - {}".format(type(error).__name__, str(error)))`, works like a charm. 2022-08-12T07:25:49.557Z+00:00 1 Reply - Copy link [![](https://www.gravatar.com/avatar/65567f5e847c6761b1fe382937258466?s=48&d=identicon&r=PG)](https://stackoverflow.com/users/849669/somebody) Somebody [Somebody](https://stackoverflow.com/users/849669/somebody) [Over a year ago](https://stackoverflow.com/questions/4690600/python-exception-message-capturing#comment136481033_49613561) woah, what a mess... so much work to just get error stack trace... 2023-11-03T13:02:47.99Z+00:00 2 Reply - Copy link Add a comment This answer is useful 71 Save this answer. Show activity on this post. There are some cases where you can use the e.message or e.messages.. But it does not work in all cases. Anyway the more safe is to use the str(e) ``` try: ... except Exception as e: print(e.message) ``` [Share](https://stackoverflow.com/a/43453668 "Short permalink to this answer") Share a link to this answer Copy link [CC BY-SA 3.0](https://creativecommons.org/licenses/by-sa/3.0/ "The current license for this post: CC BY-SA 3.0") [Improve this answer](https://stackoverflow.com/posts/43453668/edit) Follow Follow this answer to receive notifications [edited Apr 2, 2018 at 9:11](https://stackoverflow.com/posts/43453668/revisions "show all edits to this post") answered Apr 17, 2017 at 14:43 [![Slipstream's user avatar](https://i.sstatic.net/I4Nbj.jpg?s=64)](https://stackoverflow.com/users/1866389/slipstream) [Slipstream](https://stackoverflow.com/users/1866389/slipstream)Slipstream 15\.1k44 gold badges6161 silver badges4747 bronze badges ## 3 Comments Add a comment [![](https://www.gravatar.com/avatar/b51b021fec2ca6f8eb22c629907ee2a8?s=48&d=identicon&r=PG)](https://stackoverflow.com/users/466011/epalm) epalm [epalm](https://stackoverflow.com/users/466011/epalm) [Over a year ago](https://stackoverflow.com/questions/4690600/python-exception-message-capturing#comment74061301_43453668) The problem with this is, for example, if you `except Exception as e`, and `e` is an `IOError`, you get `e.errno`, `e.filename`, and `e.strerror`, but apparently no `e.message` (at least in Python 2.7.12). If you want to capture the error message, use `str(e)`, as in the other answers. 2017-04-19T18:28:35.28Z+00:00 67 Reply - Copy link [![](https://www.gravatar.com/avatar/529a4b8512718a449afa4889a7d9a761?s=48&d=identicon&r=PG&f=y&so-version=2)](https://stackoverflow.com/users/12696307/herii) Herii [Herii](https://stackoverflow.com/users/12696307/herii) [Over a year ago](https://stackoverflow.com/questions/4690600/python-exception-message-capturing#comment105561813_43453668) @epalm What if you catch the IOError before Exception? 2020-01-12T14:21:25.06Z+00:00 0 Reply - Copy link [![](https://www.gravatar.com/avatar/28ee35cd7b2ad66f0e892cf25d809669?s=48&d=identicon&r=PG)](https://stackoverflow.com/users/6526918/hosseynjf) HosseyNJF [HosseyNJF](https://stackoverflow.com/users/6526918/hosseynjf) [Over a year ago](https://stackoverflow.com/questions/4690600/python-exception-message-capturing#comment108459652_43453668) @HeribertoJuárez Why catch special cases while you can simply cast it to string? 2020-04-19T18:13:51.95Z+00:00 2 Reply - Copy link Add a comment This answer is useful 55 Save this answer. Show activity on this post. Updating this to something simpler for logger (works for both python 2 and 3). You do not need traceback module. ``` import logging logger = logging.Logger('catch_all') def catchEverythingInLog(): try: ... do something ... except Exception as e: logger.error(e, exc_info=True) ... exception handling ... ``` This is now the old way (though still works): ``` import sys, traceback def catchEverything(): try: ... some operation(s) ... except: exc_type, exc_value, exc_traceback = sys.exc_info() ... exception handling ... ``` exc\_value is the error message. [Share](https://stackoverflow.com/a/19101737 "Short permalink to this answer") Share a link to this answer Copy link [CC BY-SA 3.0](https://creativecommons.org/licenses/by-sa/3.0/ "The current license for this post: CC BY-SA 3.0") [Improve this answer](https://stackoverflow.com/posts/19101737/edit) Follow Follow this answer to receive notifications [edited Oct 30, 2016 at 22:59](https://stackoverflow.com/posts/19101737/revisions "show all edits to this post") answered Sep 30, 2013 at 18:58 [![berniey's user avatar](https://www.gravatar.com/avatar/2ff4f28cf6b7449a5a88d15042cba1b0?s=64&d=identicon&r=PG)](https://stackoverflow.com/users/1268052/berniey) [berniey](https://stackoverflow.com/users/1268052/berniey)berniey 2,96211 gold badge2020 silver badges88 bronze badges ## 2 Comments Add a comment [![](https://www.gravatar.com/avatar/455ec540f6081646ee8a12100c5c7b38?s=48&d=identicon&r=PG&f=y&so-version=2)](https://stackoverflow.com/users/4077356/sulimmesh) sulimmesh [sulimmesh](https://stackoverflow.com/users/4077356/sulimmesh) [Over a year ago](https://stackoverflow.com/questions/4690600/python-exception-message-capturing#comment60257170_19101737) This would be my preferred method. Just printing the string is useful for logging I suppose, but if I need to do anything with that information I need more than just a string. 2016-03-30T18:31:16.12Z+00:00 3 Reply - Copy link [![](https://www.gravatar.com/avatar/22361102c97f14fe158361621d811d0a?s=48&d=identicon&r=PG)](https://stackoverflow.com/users/2369544/starikoff) starikoff [starikoff](https://stackoverflow.com/users/2369544/starikoff) [Over a year ago](https://stackoverflow.com/questions/4690600/python-exception-message-capturing#comment92482043_19101737) You don't need to 'import traceback' in the second example, right? 2018-10-12T13:13:46.413Z+00:00 3 Reply - Copy link This answer is useful 27 Save this answer. Show activity on this post. Using `str(e)` or `repr(e)` to represent the exception, you won't get the actual stack trace, so it is not helpful to find where the exception is. After reading other answers and the logging package doc, the following two ways works great to print the actual stack trace for easier debugging: # use `logger.debug()` with parameter `exc_info` ``` try: # my code except SomeError as e: logger.debug(e, exc_info=True) ``` # use `logger.exception()` or we can directly use `logger.exception()` to print the exception. ``` try: # my code except SomeError as e: logger.exception(e) ``` [Share](https://stackoverflow.com/a/61441684 "Short permalink to this answer") Share a link to this answer Copy link [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/ "The current license for this post: CC BY-SA 4.0") [Improve this answer](https://stackoverflow.com/posts/61441684/edit) Follow Follow this answer to receive notifications [edited Aug 13, 2020 at 17:55](https://stackoverflow.com/posts/61441684/revisions "show all edits to this post") [![Vikramaditya Gaonkar's user avatar](https://i.sstatic.net/jly03.jpg?s=64)](https://stackoverflow.com/users/2542835/vikramaditya-gaonkar) [Vikramaditya Gaonkar](https://stackoverflow.com/users/2542835/vikramaditya-gaonkar) 7371111 silver badges2424 bronze badges answered Apr 26, 2020 at 13:34 [![jdhao's user avatar](https://i.sstatic.net/zto2h.jpg?s=64)](https://stackoverflow.com/users/6064933/jdhao) [jdhao](https://stackoverflow.com/users/6064933/jdhao)jdhao 29\.4k2323 gold badges158158 silver badges323323 bronze badges ## Comments Add a comment This answer is useful 24 Save this answer. Show activity on this post. You can use `logger.exception("msg")` for logging exception with traceback: ``` try: #your code except Exception as e: logger.exception('Failed: ' + str(e)) ``` [Share](https://stackoverflow.com/a/28431302 "Short permalink to this answer") Share a link to this answer Copy link [CC BY-SA 3.0](https://creativecommons.org/licenses/by-sa/3.0/ "The current license for this post: CC BY-SA 3.0") [Improve this answer](https://stackoverflow.com/posts/28431302/edit) Follow Follow this answer to receive notifications answered Feb 10, 2015 at 12:09 [![Peter's user avatar](https://www.gravatar.com/avatar/82f6847dddbc87f676d4aebd7a7542d4?s=64&d=identicon&r=PG)](https://stackoverflow.com/users/1382867/peter) [Peter](https://stackoverflow.com/users/1382867/peter)Peter 61911 gold badge88 silver badges1515 bronze badges ## 2 Comments Add a comment [![](https://i.sstatic.net/jQIuY.jpg?s=64)](https://stackoverflow.com/users/699665/markhu) MarkHu [MarkHu](https://stackoverflow.com/users/699665/markhu) [Over a year ago](https://stackoverflow.com/questions/4690600/python-exception-message-capturing#comment59236975_28431302) Coincidently, `e.msg` is the string representation of `Exception` class. 2016-03-03T20:54:17.887Z+00:00 0 Reply - Copy link [![](https://www.gravatar.com/avatar/294c632c8748e7051c87b8961bc4f87e?s=48&d=identicon&r=PG)](https://stackoverflow.com/users/4973698/mbdevpl) mbdevpl [mbdevpl](https://stackoverflow.com/users/4973698/mbdevpl) [Over a year ago](https://stackoverflow.com/questions/4690600/python-exception-message-capturing#comment65828456_28431302) Or simply `logger.exception(e)`. 2016-08-31T09:52:10.773Z+00:00 6 Reply - Copy link This answer is useful 21 Save this answer. Show activity on this post. After python 3.6, you can use formatted string literal. It's neat! (<https://docs.python.org/3/whatsnew/3.6.html#whatsnew36-pep498>) ``` try ... except Exception as e: logger.error(f"Failed to upload to ftp: {e}") ``` [Share](https://stackoverflow.com/a/52206134 "Short permalink to this answer") Share a link to this answer Copy link [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/ "The current license for this post: CC BY-SA 4.0") [Improve this answer](https://stackoverflow.com/posts/52206134/edit) Follow Follow this answer to receive notifications answered Sep 6, 2018 at 14:16 [![Chuan Ma's user avatar](https://www.gravatar.com/avatar/b9c1eafa90f9b895aff24750f7be1cbc?s=64&d=identicon&r=PG)](https://stackoverflow.com/users/1370036/chuan-ma) [Chuan Ma](https://stackoverflow.com/users/1370036/chuan-ma)Chuan Ma 9,91422 gold badges4949 silver badges3737 bronze badges ## Comments Add a comment This answer is useful 14 Save this answer. Show activity on this post. If you want to see the original error message, (file & line number) ``` import traceback try: print(3/0) except Exception as e: traceback.print_exc() ``` This will show you the same error message as if you didn't use `try-except`. [Share](https://stackoverflow.com/a/70377329 "Short permalink to this answer") Share a link to this answer Copy link [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/ "The current license for this post: CC BY-SA 4.0") [Improve this answer](https://stackoverflow.com/posts/70377329/edit) Follow Follow this answer to receive notifications answered Dec 16, 2021 at 10:22 [![starriet 차주녕's user avatar](https://i.sstatic.net/WpcbD.jpg?s=64)](https://stackoverflow.com/users/10027592/starriet-%EC%B0%A8%EC%A3%BC%EB%85%95) [starriet 차주녕](https://stackoverflow.com/users/10027592/starriet-%EC%B0%A8%EC%A3%BC%EB%85%95)starriet 차주녕 4,1963333 silver badges3333 bronze badges ## Comments Add a comment This answer is useful 13 Save this answer. Show activity on this post. You can try specifying the BaseException type explicitly. However, this will only catch derivatives of BaseException. While this includes all implementation-provided exceptions, it is also possibly to raise arbitrary old-style classes. ``` try: do_something() except BaseException, e: logger.error('Failed to do something: ' + str(e)) ``` [Share](https://stackoverflow.com/a/4690647 "Short permalink to this answer") Share a link to this answer Copy link [CC BY-SA 2.5](https://creativecommons.org/licenses/by-sa/2.5/ "The current license for this post: CC BY-SA 2.5") [Improve this answer](https://stackoverflow.com/posts/4690647/edit) Follow Follow this answer to receive notifications answered Jan 14, 2011 at 11:40 [![Heini Høgnason's user avatar](https://www.gravatar.com/avatar/752cb65dfd817b97837b42b3cd5e71d6?s=64&d=identicon&r=PG)](https://stackoverflow.com/users/428329/heini-h%C3%B8gnason) [Heini Høgnason](https://stackoverflow.com/users/428329/heini-h%C3%B8gnason)Heini Høgnason 67744 silver badges1010 bronze badges ## Comments Add a comment This answer is useful 7 Save this answer. Show activity on this post. for the future strugglers, in python 3.8.2(and maybe a few versions before that), the syntax is ``` except Attribute as e: print(e) ``` [Share](https://stackoverflow.com/a/60793229 "Short permalink to this answer") Share a link to this answer Copy link [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/ "The current license for this post: CC BY-SA 4.0") [Improve this answer](https://stackoverflow.com/posts/60793229/edit) Follow Follow this answer to receive notifications answered Mar 21, 2020 at 21:00 [![syter's user avatar](https://lh3.googleusercontent.com/-hm5jw7GSYQo/AAAAAAAAAAI/AAAAAAAAD9g/PICrj7hRJ4s/s64-rj/photo.jpg)](https://stackoverflow.com/users/11723929/syter) [syter](https://stackoverflow.com/users/11723929/syter)syter 14522 silver badges1111 bronze badges ## Comments Add a comment This answer is useful 7 Save this answer. Show activity on this post. There is also a way to get the raw values passed to the exception class without having to change the content type. For e.g I raise type codes with error messages in one of my frameworks. ``` try: # TODO: Your exceptional code here raise Exception((1, "Your code wants the program to exit")) except Exception as e: print("Exception Type:", e.args[0][0], "Message:", e.args[0][1]) ``` Output ``` Exception Type: 1 Message: 'Your code wants the program to exit' ``` [Share](https://stackoverflow.com/a/75269630 "Short permalink to this answer") Share a link to this answer Copy link [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/ "The current license for this post: CC BY-SA 4.0") [Improve this answer](https://stackoverflow.com/posts/75269630/edit) Follow Follow this answer to receive notifications answered Jan 28, 2023 at 17:44 [![Illegal Operator's user avatar](https://i.sstatic.net/8G67M.jpg?s=64)](https://stackoverflow.com/users/1647394/illegal-operator) [Illegal Operator](https://stackoverflow.com/users/1647394/illegal-operator)Illegal Operator 76188 silver badges1515 bronze badges ## Comments Add a comment This answer is useful 6 Save this answer. Show activity on this post. In Python 3, `str(ex)` gives us the error message. You could use `repr(ex)` to get the full text, including the name of the exception raised. ``` arr = ["a", "b", "c"] try: print(arr[5]) except IndexError as ex: print(repr(ex)) # IndexError: list index out of range print(str(ex)) # list index out of range ``` [Share](https://stackoverflow.com/a/75228768 "Short permalink to this answer") Share a link to this answer Copy link [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/ "The current license for this post: CC BY-SA 4.0") [Improve this answer](https://stackoverflow.com/posts/75228768/edit) Follow Follow this answer to receive notifications answered Jan 25, 2023 at 0:51 [![Tomisin Abiodun's user avatar](https://graph.facebook.com/1863404813688471/picture?type=large)](https://stackoverflow.com/users/8921643/tomisin-abiodun) [Tomisin Abiodun](https://stackoverflow.com/users/8921643/tomisin-abiodun)Tomisin Abiodun 12144 silver badges44 bronze badges ## Comments Add a comment This answer is useful 5 Save this answer. Show activity on this post. Use str(ex) to print execption ``` try: #your code except ex: print(str(ex)) ``` [Share](https://stackoverflow.com/a/50584719 "Short permalink to this answer") Share a link to this answer Copy link [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/ "The current license for this post: CC BY-SA 4.0") [Improve this answer](https://stackoverflow.com/posts/50584719/edit) Follow Follow this answer to receive notifications answered May 29, 2018 at 12:42 [![Niraj Trivedi's user avatar](https://i.sstatic.net/eq0HA.png?s=64)](https://stackoverflow.com/users/3839344/niraj-trivedi) [Niraj Trivedi](https://stackoverflow.com/users/3839344/niraj-trivedi)Niraj Trivedi 2,9402727 silver badges2727 bronze badges ## Comments Add a comment This answer is useful 0 Save this answer. Show activity on this post. There were already useful answers provided. Just a small additional hint located between proposals to use sys.exc\_info() and to use traceback.print\_exc() : There is a way to capture easily the original exception trace inside the script if saving to log-file is not needed (or before saving to file): ``` import traceback try: do_something # your code, which could cause exception except Exception as e: exception_details_list = traceback.format_exc() print(exception_details_list) # just to show the retrieved exception_details_list ``` Note: there are also further useful functions available by [traceback](https://docs.python.org/3/library/traceback.html) (e.g. to capture only limited information about exception). [Share](https://stackoverflow.com/a/79295002 "Short permalink to this answer") Share a link to this answer Copy link [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/ "The current license for this post: CC BY-SA 4.0") [Improve this answer](https://stackoverflow.com/posts/79295002/edit) Follow Follow this answer to receive notifications answered Dec 19, 2024 at 16:37 [![Dr.CKYHC's user avatar](https://lh4.googleusercontent.com/-kWEDFCqdPhw/AAAAAAAAAAI/AAAAAAAAAAA/AMZuuclFrD9o5RJ9jFimfTGGmEVDPoYmYw/s96-c/s64-rj/photo.jpg)](https://stackoverflow.com/users/19041857/dr-ckyhc) [Dr.CKYHC](https://stackoverflow.com/users/19041857/dr-ckyhc)Dr.CKYHC 10555 bronze badges ## Comments Add a comment This answer is useful \-1 Save this answer. Show activity on this post. The easiest way to do this is available through the [Polog](https://github.com/pomponchik/polog) library. Import it: ``` $ pip install polog ``` And use: ``` from polog import log, config, file_writer config.add_handlers(file_writer('file.log')) with log('message').suppress(): do_something() ``` Note how much less space the code has taken up vertically: only 2 lines. [Share](https://stackoverflow.com/a/74210713 "Short permalink to this answer") Share a link to this answer Copy link [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/ "The current license for this post: CC BY-SA 4.0") [Improve this answer](https://stackoverflow.com/posts/74210713/edit) Follow Follow this answer to receive notifications answered Oct 26, 2022 at 15:51 [![Evgeniy Blinov's user avatar](https://lh3.googleusercontent.com/a-/AOh14GiTorduX2qPJYDBrrs4dbMsPj5XKJZp-aqInCLHTA=k-s64)](https://stackoverflow.com/users/14522393/evgeniy-blinov) [Evgeniy Blinov](https://stackoverflow.com/users/14522393/evgeniy-blinov)Evgeniy Blinov 40744 silver badges33 bronze badges ## Comments Add a comment [Protected question](https://stackoverflow.com/help/privileges/protect-questions). 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