[Python-Dev] PEP 3144: IP Address Manipulation Library for the Python Standard Library

[Eric Smith]

Fred Drake wrote:
> On Aug 19, 2009, at 6:01 PM, Peter Moody wrote:
>> just to double check, it's fine for IPNetwork to remain hashable if
>> set_prefix() actually returned a new object, correct?
> 
> 
> The name would be confusing, though.  Perhaps using_prefix() would be 
> more clear.

I think you'd be better off either doing this with an optional parameter 
to __init__, or a class method factory function (maybe from_prefix or 
similar). I don't see why it should be a method on an existing object.