[Python-Dev] PEP 362 Third Revision

Fri Jun 15 21:06:43 CEST 2012

2012年6月15日 Larry Hastings <larry at hastings.org>:
> On 06/15/2012 11:46 AM, R. David Murray wrote:
>> Adding a os.have_openat seems more reasonable than adding is_implemented
> to every __signature__ object. And more useful, as well; it provides
> a much more specific piece of information.
>>> We already have "os.have_openat"; it's spelled
> sysconfig.get_config_var('HAVE_OPENAT').  But, assuming I land issue 14626,
> this leads us to:
>> Q: Can I use the dir_fd parameter to os.open?
> A: Only if sysconfig.get_config_var('HAVE_OPENAT') is true.
>> Q: Can I use the fd parameter to os.utime?
> A: Only if sysconfig.get_config_var('HAVE_FUTIMENS') or
> sysconfig.get_config_var('HAVE_FUTIMES') is true.
>> I feel this interface lacks civility.

There's no reason this couldn't be wrapped into some sort of os level
attribute or function.
-- 
Regards,
Benjamin