[issue10805] traceback.print_exception throws AttributeError when exception is None

2015-03-08 Thread Claudiu Popa 

Claudiu Popa added the comment:

This was recently fixed in 3.5 by 73afda5a4e4c.

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nosy: +Claudiu.Popa
resolution:  - fixed
stage:  - resolved
status: open - closed

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[issue10805] traceback.print_exception throws AttributeError when exception is None

2012-02-23 Thread Giovanni Funchal 

Giovanni Funchal gafunc...@gmail.com added the comment:

This bug affects me, found it when migrating from 2.7 to 3.2, in a function 
calling traceback.print_exc() called while there were no active exception 
being handled. Previous behavior was to print None.

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nosy: +Giovanni.Funchal

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[issue10805] traceback.print_exception throws AttributeError when exception is None

2011-12-17 Thread Boris FELD 

Boris FELD lothiral...@gmail.com added the comment:

I add a test to test_traceback.py for this bug. Bug is confirmed on python 3.2 
and python3.3. I use 2.x behavior as reference.

I don't know if we should add an assertion in traceback.print_exception or 
traceback._iter_chain, so I add the test for traceback.print_exception.

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keywords: +patch
nosy: +Boris.FELD
Added file: 
http://bugs.python.org/file24011/new_traceback_test_print_traceback.patch

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[issue10805] traceback.print_exception throws AttributeError when exception is None

2011-01-03 Thread Antoine Pitrou 

Antoine Pitrou pit...@free.fr added the comment:

Well, under 2.x, print_traceback(None, None, None) would just print None, but 
I'm not sure that's a supported use case.

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nosy: +ncoghlan

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[issue10805] traceback.print_exception throws AttributeError when exception is None

2011-01-02 Thread Austin Bingham 

New submission from Austin Bingham austin.bing...@gmail.com:

traceback.print_exception() will throw an AttributeException if `value` is None 
and `chain` is True. This is because `_iter_chain` assumes that the exception 
object has a `__cause__` attribute. You can trigger this by trying for format a 
non-existent exception:

   import logging, sys
   logging.Formatter().formatException(sys.exc_info())
  Traceback (most recent call last):
  File stdin, line 1, in module
  File /usr/lib/python3.1/logging/__init__.py, line 418, in formatException
traceback.print_exception(ei[0], ei[1], ei[2], None, sio)
  File /usr/lib/python3.1/traceback.py, line 155, in print_exception
for value, tb in values:
  File /usr/lib/python3.1/traceback.py, line 122, in _iter_chain
cause = exc.__cause__

This is assuming that sys.exc_info() returns (None, None, None).

--
components: Library (Lib)
messages: 125054
nosy: abingham
priority: normal
severity: normal
status: open
title: traceback.print_exception throws AttributeError when exception is None
type: behavior
versions: Python 3.1

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[issue10805] traceback.print_exception throws AttributeError when exception is None

2011-01-02 Thread Antoine Pitrou 

Changes by Antoine Pitrou pit...@free.fr:


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nosy: +pitrou
versions: +Python 3.2

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