[Python-Dev] __eq__ vs hash

[Ralf Schmitt]

Hi all,

the news file for python 2.6 does not mention that you need to define
__hash__ in case you define __eq__ for a class.
This breaks some code (for me: mercurial and pyparsing).
Shouldn't this be documented somewhere (I also cannot find it in the
whatsnew file).

- Ralf
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