[Python-Dev] What this code should do? (original) (raw)

Maciej Fijalkowski fijall at gmail.com
Fri Sep 19 21:34:48 CEST 2008


On Fri, Sep 19, 2008 at 9:30 PM, Jean-Paul Calderone <exarkun at divmod.com> wrote:

On Fri, 19 Sep 2008 18:26:05 +0200, Amaury Forgeot d'Arc <amauryfa at gmail.com> wrote:

Hello Maciej, Maciej Fijalkowski wrote:

Hello, I'm a little clueless about exact semantics of following snippets: http://paste.pocoo.org/show/85698/ is this fine? or shall I fill the bug? (the reason to ask is because a) django is relying on this b) pypy implements it differently) Note that python 3.0 has a different behaviour; in the first sample, it prints: A (<class 'NameError'> ... B (<class 'ZeroDivisionError'>, ... See the subtle differences between http://docs.python.org/dev/library/sys.html#sys.excinfo http://docs.python.org/dev/3.0/library/sys.html#sys.excinfo The second example changes its behavior, too. It gives back the NameError from the excinfo call. I'm having a hard time reconciling this with the Python 3.0 documentation. Can you shed some light? Jean-Paul

I think in python 2.x it's at least against the principle of least surprise. It should not behave differently. The behavior of python 3 though it's even against docs :-/



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