Puzzled by "is"

[Dick Moores]

On 8/12/07, Ben Finney <bignose+hates-spam at benfinney.id.au> wrote:
>
> Dick Moores <rdm at rcblue.com> writes:
>
> > At 06:13 PM 8/9/2007, Ben Finney wrote:
> > >it's entirely left to the language implementation which
> > >optimisation trade-offs to make, and the language user (that's you
> > >and I) should *not* expect any particular behaviour to hold between
> > >different implementations.
> >
> > I'm not clear on the meaning of "implementations" here.  Would 2.5
> > for Windows, Mac, Linux all be different implementations? Would Iron
> > Python be another? ActivePython?
>
> For the purpose of the above statement, you should consider even the
> same Python on two different machines to be "different
> implementations". As a programmer writing Python code, you should not
> expect any "implementation-dependent" behaviour to operate in any
> particular way.


So would a programmer EVER use "is" in a script?

Dick
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/python-list/attachments/20070812/72ea2c30/attachment.html>