[issue11007] stack tracebacks should give the relevant class name

[Irit Katriel]

Change by Irit Katriel :


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versions: +Python 3.10 -Python 3.7

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[issue11007] stack tracebacks should give the relevant class name

[Zachary Ware]

Zachary Ware added the comment:

__qualname__ has become a thing since this issue was opened, it may make 
implementation of this feature significantly easier.

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nosy: +zach.ware
versions: +Python 3.7 -Python 3.5

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[issue11007] stack tracebacks should give the relevant class name

[Camilla Montonen]

Camilla Montonen added the comment:

Reproduced original issue in 3.5.1.

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nosy: +Winterflower
versions: +Python 3.5 -Python 3.3

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[issue11007] stack tracebacks should give the relevant class name

[Skip Montanaro]

Changes by Skip Montanaro s...@pobox.com:


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[issue11007] stack tracebacks should give the relevant class name

[Terry J. Reedy]

Terry J. Reedy tjre...@udel.edu added the comment:

I am not sure that traceback changes should be made in bug-fix releases, though 
it is a moot point until a change is ready for 3.3.

That said, having a bit more info in tracebacks so they can more often be 
understood without looking through possibly many source files would be good.

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nosy: +terry.reedy
versions:  -Python 2.5, Python 2.6, Python 2.7, Python 3.1, Python 3.2

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[issue11007] stack tracebacks should give the relevant class name

[Amaury Forgeot d'Arc]

Amaury Forgeot d'Arc amaur...@gmail.com added the comment:

trace.py has a hack for this: it uses gc.get_referrers() to crawl back from the 
code object to the encloding class.
I would not trust this gc.get_referrers() though; it is probably slow, and 
there are even some crashers related to this function; I would not like it to 
be called on every traceback.

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[issue11007] stack tracebacks should give the relevant class name

[Joshua Blount]

New submission from Joshua Blount he...@joshuablount.com:

When I get a stack traceback, it would be very handy if the traceback gave me 
the relevant class name (along with all the current information).

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components: Interpreter Core
messages: 127015
nosy: stickwithjosh
priority: normal
severity: normal
status: open
title: stack tracebacks should give the relevant class name
type: feature request
versions: Python 2.5, Python 2.6, Python 2.7, Python 3.1, Python 3.2, Python 3.3

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[issue11007] stack tracebacks should give the relevant class name

[Skip Montanaro]

Skip Montanaro s...@pobox.com added the comment:

Given this code:

#!/usr/bin/env python

class C:
def bomb(self):
1/0

c = C()
c.bomb()

when run it produces

Traceback (most recent call last):
  File stdin, line 8, in module
  File stdin, line 5, in bomb
ZeroDivisionError: integer division or modulo by zero

You would like bomb to be C.bomb?

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[issue11007] stack tracebacks should give the relevant class name

[Joshua Blount]

Joshua Blount he...@joshuablount.com added the comment:

Yes!

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[issue11007] stack tracebacks should give the relevant class name

[Antoine Pitrou]

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

Well, given you have the line number at which the method is defined, it is easy 
to know which class it belongs to.

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[issue11007] stack tracebacks should give the relevant class name

[Skip Montanaro]

Skip Montanaro s...@pobox.com added the comment:

I'm not sure you can get there from here, certainly not in a
straightforward way.  The traceback formatter gets a reference to
the code object (traceback - frame - code).  That object has a name
attribute (which is what's displayed) but it doesn't have a reference
back to the function object.

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[issue11007] stack tracebacks should give the relevant class name

[Skip Montanaro]

Skip Montanaro s...@pobox.com added the comment:

I agree with Antoine, however, if you can come up with a
reasonable patch which implements the desired behavior, I
think it would be reasonable to add it to Python 3.3.  The
definition of reasonable is subject to interpretation.
As I indicated in my earlier comment, there is no straight
path from the traceback object to the surrounding class.

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