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Thu Apr 25 21:02:07 CEST 2013 · https://mail.python.org/pipermail/python-dev/2013-April/125534.html

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On 04/25/2013 12:39 PM, Ethan Furman wrote:
> Animals is a class. Giving Animals a parameter (such as 1 or 'ant') 
> should return the instance that matches.

Animals is *not* a class -- it just uses the class syntax as a convenient
way to set up the names used to construct the new type.  (This subtlety
is why the metaclass hook is reputed to make peoples' brains explode).

> This is how classes work.

Not really.  Normal classes, when called, give you a new instance:  they
don't look up existing instances.

Tres.
- -- 
===================================================================
Tres Seaver          +1 540-429-0999          tseaver at palladion.com
Palladion Software   "Excellence by Design"    http://palladion.com
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Showing content from https://mail.python.org/pipermail/python-dev/2013-April/125534.html below:

[Python-Dev] PEP 435 -- Adding an Enum type to the Python standard library