[Python-Dev] PEP 389: argparse - new command line parsing module

[Amaury Forgeot d'Arc]

2009/10/8 Paul Moore <p.f.moore at gmail.com>:
> 2009/10/7 Antoine Pitrou <solipsis at pitrou.net>:
>> Python 3 complains at startup and is a bit more explicit:
>>
>> $ ./python -c '1' >&-
>> Fatal Python error: Py_Initialize: can't initialize sys standard streams
>> OSError: [Errno 9] Bad file descriptor
>> Abandon
>>
>> Of course, if it is stderr that you explicitly close, you lose all reporting:
>>
>> $ ./python -c '1' 2>&-
>> Abandon
>
> Hmm, how does Python 3's pythonw work on Windows? (I don't have a
> Windows installation of Python 3 to hand at the moment)

When running pythonw, fileno(stdout) is negative, so sys.stdout is set to None,
and print() silently returns.
But the situation is not perfect, see http://bugs.python.org/issue6501
where Apache provides a stdout, but python cannot determine the
encoding because there is no console.

-- 
Amaury Forgeot d'Arc