So clearly the ree expectation is that they compare equal (if the values are). On Apr 13, 2013 11:24 AM, "Scott Dial" <[email protected]> wrote:
> On 4/12/2013 10:51 PM, Steven D'Aprano wrote: > > And two examples from asm-generic/errno.h: > > > > #define EWOULDBLOCK EAGAIN /* Operation would block */ > > #define EDEADLOCK EDEADLK > > > > That's actually even better of an example than you may have realized > because historically EWOULDBLOCK != EAGAIN[1]. So, there very well may > need to exist such code as: > > if <some hairy platform>: > _EAGAIN = <X> > _EWOULDBLOCK = <Y> > else: > _EAGAIN = _EWOULDBLOCK = <X> > > class Errno(Enum): > EAGAIN = _EAGAIN > EWOULDBLOCK = _EWOULDBLOCK > > I don't think it's all that uncommon that enum values that represent > states of a system get merged or renamed over time, and this one is a > great example of that. > > [1] > > http://www.gnu.org/savannah-checkouts/gnu/libc/manual/html_node/Error-Codes.html#index-EAGAIN-97 > > -- > Scott Dial > [email protected] > _______________________________________________ > Python-Dev mailing list > [email protected] > http://mail.python.org/mailman/listinfo/python-dev > Unsubscribe: > http://mail.python.org/mailman/options/python-dev/guido%40python.org >
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