[New-bugs-announce] [issue2485] Traceback changed in 2.6 for unhashable objects

[Martin Geisler]

New submission from Martin Geisler <mg at daimi.au.dk>:

The traceback message given when trying to hash unhashable objects has
changed from Python 2.5 to 2.6:

Python 2.5.2a0 (r251:54863, Feb 10 2008, 01:31:28) 
>>> hash([])
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: list objects are unhashable

Python 2.6a1 (r26a1:61143, Mar 25 2008, 19:41:30) 
>>> hash([])
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: unhashable type: 'list'

This breaks my Doctests unless I add a somewhat ugly "# doctest:
+IGNORE_EXCEPTION_DETAIL" comment, so if this is not done on purpose, I
would prefer Python 2.6 to output the same as 2.5.

----------
messages: 64517
nosy: mg
severity: normal
status: open
title: Traceback changed in 2.6 for unhashable objects
type: behavior
versions: Python 2.6

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