[Python-Dev] (not) redefining is

[Greg Ewing]

"Jewett, Jim J" <jim.jewett at eds.com>:

> I personally like (and have used) Barry's suggestion of a new named
> object().  Unfortunately, object() is longer to type, not as backwards
> compatible, and places too emphasis on what the sentinel *is* rather
> than what is *isn't*.

Perhaps there should be a built-in type called 'sentinel'
for people to create unique objects from?

The implementation could be very simple:

  sentinel = object

:-)

Greg Ewing, Computer Science Dept, +--------------------------------------+
University of Canterbury,	   | A citizen of NewZealandCorp, a	  |
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