[issue29660] Document that print/format_exception ignore etype

[Mariatta Wijaya]

Mariatta Wijaya added the comment:


New changeset cca3d4aa25a7aea0cda90dd2aa012f58c85e7e24 by Mariatta (Matthias 
Bussonnier) in branch '3.5':
bpo-29660: traceback: Document that etype is ignored in some places. (GH-344) 
(GH-1914)
https://github.com/python/cpython/commit/cca3d4aa25a7aea0cda90dd2aa012f58c85e7e24


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[issue29660] Document that print/format_exception ignore etype

[Mariatta Wijaya]

Mariatta Wijaya added the comment:

Thanks :)

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resolution:  -> fixed
stage: backport needed -> resolved
status: open -> closed

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[issue29660] Document that print/format_exception ignore etype

[Mariatta Wijaya]

Mariatta Wijaya added the comment:


New changeset e417d12d728103445b8516a35f643536e401f120 by Mariatta (Matthias 
Bussonnier) in branch '3.6':
bpo-29660: traceback: Document that etype is ignored in some places. (GH-344) 
(GH-1913)
https://github.com/python/cpython/commit/e417d12d728103445b8516a35f643536e401f120


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[issue29660] Document that print/format_exception ignore etype

[Matthias Bussonnier]

Changes by Matthias Bussonnier :


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[issue29660] Document that print/format_exception ignore etype

[Matthias Bussonnier]

Changes by Matthias Bussonnier :


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[issue29660] Document that print/format_exception ignore etype

[Matthias Bussonnier]

Matthias Bussonnier added the comment:

Thanks @Mariatta, I'll try to cherry-pick!

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[issue29660] Document that print/format_exception ignore etype

[Mariatta Wijaya]

Mariatta Wijaya added the comment:

Thanks Matthias.

I can backport this later today.
Or do you want to do it? :)
You can use cherry_picker.py 
https://github.com/python/core-workflow/tree/master/cherry_picker

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[issue29660] Document that print/format_exception ignore etype

[Mariatta Wijaya]

Changes by Mariatta Wijaya :


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stage: patch review -> backport needed

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[issue29660] Document that print/format_exception ignore etype

[Mariatta Wijaya]

Mariatta Wijaya added the comment:


New changeset cdb89cd72cbc66e4626914b4a71b9052ddb3a32a by Mariatta (Matthias 
Bussonnier) in branch 'master':
bpo-29660: traceback: Document that etype is ignored in some places. (GH-344)
https://github.com/python/cpython/commit/cdb89cd72cbc66e4626914b4a71b9052ddb3a32a


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[issue29660] Document that print/format_exception ignore etype

[Mariatta Wijaya]

Changes by Mariatta Wijaya :


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stage:  -> patch review

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[issue29660] Document that print/format_exception ignore etype

[Matthias Bussonnier]

Changes by Matthias Bussonnier :


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[issue29660] Document that print/format_exception ignore etype

[Matthias Bussonnier]

New submission from Matthias Bussonnier:

As far as I can tell, http://bugs.python.org/issue17911 made a couple of 
function in traceback ignore their first arguments (etype) and infer the type 
from the second one (evalue). 

(In git 6bc2c1e7 and 2f0441f0 respectively).

At least print_exception and format_exception are affected.

This likely affect http://bugs.python.org/issue26389 (who wish to expand same 
API to remove these parameters).

And inconsistency with `format_exception_only` which does need `etype` should 
be checked. 

If etype is a deprecated parameter it should be noted, and should likely raise 
a DeprecationWarning as well when set.

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assignee: docs@python
components: Documentation
messages: 288617
nosy: docs@python, mbussonn
priority: normal
severity: normal
status: open
title: Document that print/format_exception ignore etype
versions: Python 3.5, Python 3.6, Python 3.7

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