[Python-Dev] PEP 3144 review. (original) (raw)

R. David Murray rdmurray at bitdance.com
Mon Sep 28 13:50:25 CEST 2009

On Mon, 28 Sep 2009 at 07:34, R. David Murray wrote:

The fundamental divide here is between two behaviors.

ipaddr: > > > x = IPv4Network('192.168.1.1/24') > > > y = IPv4Network('192.168.1.0/24') > > > x == y False > > > x.ip IPv4Address('192.168.1.1') desired: > > > x = IPv4Network('192.168.1.1/24') > > > y = IPv4Network('192.168.1.0/24') > > > x == y True > > > x.ip Traceback (most recent call last): File "", line 1, in AttributeError: 'IPv4Network' object has no attribute 'ip' Everything else is pretty much bikeshedding and can be dealt with. This is fundamental and Peter has indicated he will not change it.

By the way, I think this is a reasonable position on Peter's part. He's got an installed base that expects the current behavior (ie: the "field tested module" has this behavior; making this change would produce a fundamentally new module that has not been field tested).

But I also think that the current behavior is not a good behavior for a module in the stdlib.

--David

More information about the Python-Dev mailing list