[Bf-committers] Python console IO encoding: PYTHONIOENCODING envvar

Bastien Montagne montagne29 at wanadoo.fr
Mon Sep 16 09:27:22 CEST 2013

Well, in the bug report error comes from a print in addon_utils.py... 
Here is a patch (small wrapper around print that sets 'file' kwarg to 
sys.stderr) that fixes the issue, at least for me (tested with an ascii 
console): http://www.pasteall.org/45600/diff

On 16/09/2013 08:40, Campbell Barton wrote:
> On Mon, Sep 16, 2013 at 4:17 PM, Bastien Montagne<montagne29 at wanadoo.fr>  wrote:
>> Hi Campbell,
>> Could we consider using stderr in these cases, as a temp workaround?
>>   From doc, "For stderr, the :errorhandler part is ignored; the handler
>> will always be 'backslashreplace'.", and indeed a quick test (under
>> linux) prints escapes codes in an ASCII console, instead of erroring...
> Ah nice, I wasn't aware of this,
> however I think using the stderr isn't going to be able to resolve all
> these issues.
> print() can be replaced with sys.stderr.write(), but in the bug report
> the error is in %r ->  repr(). which makes a string to pass to Blenders
> UI.
> So not sure how stderr would be used to get around this.
>> On 14/09/2013 02:40, Campbell Barton wrote:
>>> On Fri, Sep 13, 2013 at 11:02 PM, Bastien Montagne
>>> <montagne29 at wanadoo.fr>   wrote:
>>>> Hey devs,
>>>> Just ran into this bug report:
>>>> https://projects.blender.org/tracker/?func=detail&atid=498&aid=36722&group_id=9
>>>> Most likely, it is an issue of non-encodable char in its path (stupid
>>>> windows...)
>>>> Anyway, searching a bit around, I found PYTHONIOENCODING envvar
>>>> (http://docs.python.org/3/using/cmdline.html#envvar-PYTHONIOENCODING),
>>>> which is supposed to force encoding of stdXXX streams. Are we already
>>>> using this, or wouldn't it work in our case? Else, setting it to
>>>> something like "utf-8:replace" could save us some issues under windows...
>>> Afraid its a known issue, see comment in BPY_python_start():
>>> 'PYTHONIOENCODING' is ignored in MS-Windows
>>> bug report:
>>> https://projects.blender.org/tracker/?func=detail&aid=31555
>>> upstream report to CPython:
>>> http://bugs.python.org/issue16129
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