[Python-Dev] PEP 409 and the stdlib
R. David Murray
rdmurray at bitdance.com
Mon May 20 15:52:08 CEST 2013
On Mon, 20 May 2013 06:12:41 -0700, Ethan Furman <ethan at stoneleaf.us> wrote:
> As a quick reminder, PEP 409 allows this:
> except AnError:
> raise SomeOtherError from None
> so that if the exception is not caught, we get the traditional single exception traceback, instead of the new:
> During handling of the above exception, another exception occurred
> My question:
> How do we go about putting this in the stdlib? Is this one of the occasions where we don't do it unless we're modifying
> a module already for some other reason?
> For that matter, should we?
> Pros: Makes tracebacks much less confusing, especially coming from a library
> Cons: Could hide bugs unrelated to what is being caught and transformed
I'm pretty sure the answer is "almost never".
I think a case needs to be made for any place that seems like it would
actually improve things, because usually I don't think it will, in the
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