[Python-Dev] IO module precisions and exception hierarchy
Nick Coghlan
ncoghlan at gmail.com
Mon Sep 28 14:40:44 CEST 2009
Antoine Pitrou wrote:
> Le Mon, 28 Sep 2009 06:41:17 +1000, Nick Coghlan a écrit :
>> Michael's response cut to the heart of the issue though - a richer IO
>> exception hierarchy can make life interesting for compatibility purposes
>> (especially when creating "file-like" interfaces to non-file objects).
>
> Well, not more interesting than currently where you need to replicate
> errno numbers if you want to make the errors precise enough, since an API
> consumer wanting to check specific error conditions will discriminate on
> errno.
>
> If you don't want to go to that level of perfection, you just have to
> raise a plain IOError (or OSError :-)) without bothering about errno or
> subclasses; like you would do today.
Fair point.
Cheers,
Nick.
--
Nick Coghlan | ncoghlan at gmail.com | Brisbane, Australia
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