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Mon Sep 28 16:04:58 CEST 2009 · http://mail.python.org/pipermail/python-dev/2009-September/092213.html

On Mon, Sep 28, 2009 at 7:24 AM, Nick Coghlan <ncoghlan at gmail.com> wrote:

> I should note that I've softened my position slightly from what I posted
> yesterday. I could live with the following compromise:
>
>    >>> x = IPv4Network('192.168.1.1/24')
>    >>> y = IPv4Network('192.168.1.0/24')
>     >>> x == y # Equality is the part I really want to see changed
>    True
>     >>> x.ip
>    IPv4Address('192.168.1.1')
>    >>> y.ip
>     IPv4Address('192.168.1.0')
>

With those semantics, IPv4Network objects with distinct IP addresses (but
the same network) could no longer be stored in a dictionary or set.  IMO, it
is a little counter-intuitive for objects to compare equal yet have
different properties.  I don't think this is a good compromise.

--
Daniel Stutzbach, Ph.D.
President, Stutzbach Enterprises, LLC <http://stutzbachenterprises.com>
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[Python-Dev] PEP 3144 review.