[issue2920] Patch to print symbolic value or errno in EnvironmentError.__str__()

[Alexander Belopolsky]

Alexander Belopolsky <alexander.belopolsky at gmail.com> added the comment:

The patch already checks for failed import and falls back to printing  
numerical error code. However, I don't like the import either. I will  
think about the alternatives.

On May 28, 2010, at 8:27 AM, Antoine Pitrou <report at bugs.python.org>  
wrote:

>
> Antoine Pitrou <pitrou at free.fr> added the comment:
>
> Agreed with Amaury. Module import could fail for various reasons  
> (perhaps the same ones which led to the exception being raised!), or  
> could deadlock if the import lock is being held. Also, having  
> __str__ fail is usually very annoying for users (especially when  
> it's the __str__ of an exception object).
>
> If it's too hard to import errno at startup (because of  
> bootstrapping), I would suggest using PyImport_ImportModuleNoBlock()  
> instead, and silence errors (just print the numeric value of errno  
> instead).
>
> ----------
> nosy: +pitrou
> versions: +Python 2.7, Python 3.1, Python 3.2
>
> _______________________________________
> Python tracker <report at bugs.python.org>
> <http://bugs.python.org/issue2920>
> _______________________________________

----------
nosy: +Alexander.Belopolsky

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<http://bugs.python.org/issue2920>
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