PyErrr_Display and traceback.format_exception_only behaviour

[jhermann]

BPO	860326
Nosy	@gvanrossum, @tim-one, @birkenfeld
Files	traceback.py.patch tb_problem.py: Bug demonstration

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = 'https://github.com/gvanrossum'
closed_at = <Date 2008-01-06.22:29:46.708>
created_at = <Date 2003-12-15.13:37:04.000>
labels = ['extension-modules']
title = 'PyErrr_Display and traceback.format_exception_only behaviour'
updated_at = <Date 2008-01-06.22:29:46.708>
user = 'https://bugs.python.org/jhermann'

bugs.python.org fields:

activity = <Date 2008-01-06.22:29:46.708>
actor = 'admin'
assignee = 'gvanrossum'
closed = True
closed_date = None
closer = None
components = ['Extension Modules']
creation = <Date 2003-12-15.13:37:04.000>
creator = 'jhermann'
dependencies = []
files = ['5742', '5743']
hgrepos = []
issue_num = 860326
keywords = ['patch']
message_count = 6.0
messages = ['45051', '45052', '45053', '45054', '45055', '45056']
nosy_count = 4.0
nosy_names = ['gvanrossum', 'tim.peters', 'georg.brandl', 'jhermann']
pr_nums = []
priority = 'normal'
resolution = 'accepted'
stage = None
status = 'closed'
superseder = None
type = None
url = 'https://bugs.python.org/issue860326'
versions = ['Python 3.0']

[jhermann]

PyErrr_Display and traceback.format_exception_only
behave differently; namely, the first one prints the
module of an exception, the latter not.

The attached tb_problem.py illustrates the problem, it
prints:

Error: text

Traceback (most recent call last):
  File "tb_problem.py", line 3, in ?
    raise uu.Error("text")
uu.Error: text

(note the diff betwen "Error:..." and "ui.Error:...")

The attached patch fixes this. Python 2.2.2 has the
same problem.

[birkenfeld]

Logged In: YES
user_id=849994

Late is better than never ;)

Thanks for the patch, I applied it as rev. 45321, 45322(2.4).

[tim-one]

Logged In: YES
user_id=31435

As noted on python-dev, the 2.4-branch backport should be
reverted, because it changes visible behavior (including
causing at least three of the standard tests to fail).

[tim-one]

Logged In: YES
user_id=31435

Opened this again. Anthony reverted the patch on both trunk
and 2.4 branch. Whether it will be applied on the trunk
again is being discussed on python-dev.

[birkenfeld]

Logged In: YES
user_id=849994

Seems like this is an item for Python 3000.

[gvanrossum]

Logged In: YES
user_id=6380

Committed in the p3yk branch as revision 51625.

This isn't exactly the same patch, and also fixes the
doctests that this here patch broke, but it fixes the same
issue.