Bugs item #1294232, was opened at 2005-09-18 01:07 Message generated for change (Tracker Item Submitted) made by Item Submitter You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=105470&aid=1294232&group_id=5470
Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: Type/class unification Group: Python 2.4 Status: Open Resolution: None Priority: 5 Submitted By: Pedro Werneck (pwerneck) Assigned to: Nobody/Anonymous (nobody) Summary: Error in metaclass search order Initial Comment: In a simple class hierarchy, I have class A with metaclass M_A and class B, subclass of A, with metaclass M_B, subclass of M_A, as required. A new class C, subclass of B, must have M_B or a subclass of it as subclass, or a TypeError, metaclass conflict exception is raised. The exception is raised in a multiple class hierarchy (diamond, trees, etc) or in a single class hierarchy when using a metaclass with no relation to M_A and M_B. If M_A or type are used as C metaclass, the interpreter is ignoring dict['__metaclass__'], which has priority over B.__class__ and using M_B, when it was supposed to raise TypeError, with the "metaclass conflict" error message. More details in attached file. ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=105470&aid=1294232&group_id=5470 _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
