[Python-Dev] operator precedence of eq, ne, etc, if both object have implementations (original) (raw)

Nick Coghlan ncoghlan at gmail.com
Wed Sep 23 14:05:29 CEST 2009

Mark Dickinson wrote:

On Tue, Sep 22, 2009 at 3:37 PM, Chris Withers <chris at simplistix.co.uk> wrote:

Where are the specifications on what happens if two objects are compared and both have implementations of eq? Which eq is called? What happens if the first one called returns False? Is the second one called? What is one implements eq and the other ne? I (still :-) think this is covered, for Python 2.x at least, by: http://docs.python.org/reference/datamodel.html#coercion-rules

Quite some time ago, I attempted to accurately document all of this - my efforts are buried in an ODF document in the SVN sandbox:

http://svn.python.org/view/sandbox/trunk/userref/ODF/Chapter02_StatementsAndExpressions.odt

Extracting all of that text with some kind of ODT2ReST converter has now been on my to-do list for over a year :P

Cheers, Nick.

-- Nick Coghlan | ncoghlan at gmail.com | Brisbane, Australia

More information about the Python-Dev mailing list