ralf schmitt zsobrpgmailcom fri apr 4 2008 438 pm guido van rossum wrote fri apr 4 2008 246 ralf schmitt wrote news file python 26 mention need define __hash__ case define __eq__ class breaks code mercurial pyparsing shouldnt documented somewhere also find whatsnew file well technically always requirement specific code breaks maybe need turn warning order backwards compatible dont feel like digging mercurial pyparsing code currently sorry thu 07 aug 2008 094054 0200 pythondev __eq__ vs hash