Re: [Zope-dev] _getOb or __getattr__?

On 2/27/01 10:59 AM, in article 3A9BCED9.A94826E@nipltd.com, "Chris Withers" <chrisw@nipltd.com> wrote:

Hi,

I need a product with custom attribute getting code and so looked to the BTreeFolder product for inspiration.

It implements both __getattr__ and _getOb which appear to do roughly the same thing.

What's the difference?

Shane hints that __getattr__ is slower but allows acquisiton. Why is that?

_getOb and _setOb are for placing subobjects somewhere besides attributes (which is the default implementation). _getOb and friends are the default protocol that *SHOULD* be used by systems that change subobjects (ie - copy and paste). Jeffrey P Shell, jeffrey@Digicool.com http://www.digicool.com/ | http://www.zope.org