Because len and the others call foo.__len__. It's a quick way at getting at those methods without having to call them yourself, so any class can implement a __len__ method and len would work on it.
On 10/16/2012 7:08 AM, Homme, James wrote:
Hi,I tend to obsess about things sometimes. I was looking at the Python Standard Library documentation and reading about lists, dictionaries, and files, and I started to wonder why len, del, and open are part of the built-in's, if that's the right term, rather than methods of the objects called dictionary, list, and file. Just saying.Jim ------------------------------------------------------------------------This e-mail and any attachments to it are confidential and are intended solely for use of the individual or entity to whom they are addressed. If you have received this e-mail in error, please notify the sender immediately and then delete it. If you are not the intended recipient, you must not keep, use, disclose, copy or distribute this e-mail without the author's prior permission. The views expressed in this e-mail message do not necessarily represent the views of Highmark Inc., its subsidiaries, or affiliates.
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