Message178510
| Author |
serhiy.storchaka |
| Recipients |
Arfrever, carsten.klein@axn-software.de, larry, mark.dickinson, r.david.murray, serhiy.storchaka, terry.reedy |
| Date |
2012年12月29日.16:38:53 |
| SpamBayes Score |
-1.0 |
| Marked as misclassified |
Yes |
| Message-id |
<1356799134.12.0.828672643745.issue16801@psf.upfronthosting.co.za> |
| In-reply-to |
| Content |
> And if os.open were supplied in os.py:
>
> @inspect.override_string_representation('mode',
> 'os.O_CREAT | os.O_RDWR')
> def open(file, flags, mode=0o777, *, dir_fd=None):
Other use case is a sentinel default. "foo(arg={})" looks better than "foo(arg=<object object>)" for function which use a sentinel idiom:
_sentinel = object()
def foo(arg=_sentinel):
if arg is _sentinel:
arg = {}
...
Sometimes full signature overwriting is needed (see for example Python implementation of operator.methodcaller() in issue16694). |
|