New submission from Thomas Herve: A new behavior was introduced in r59106 in python trunk, which look suspicious to me. Basically, every time a class defines a comparison operator, it's __hash__ method is defined to None. The simple following example shows it:
>>> class A(object): ... def __init__(self, b): ... self.b = b ... def __cmp__(self, other): ... if not isinstance(other, A): ... return -1 ... return cmp(self.b, other.b) ... >>> hash(A(2)) Traceback (most recent call last): File "<stdin>", line 1, in <module> TypeError: 'NoneType' object is not callable The problematic change is here: http://svn.python.org/view/python/trunk/Objects/typeobject.c?rev=59106&r1=58032&r2=59106 And mainly the overrides_hash call in inherit_slots. FWIW, I've encounter the problem because zope.interface is now usable on trunk. ---------- components: Interpreter Core messages: 58124 nosy: therve severity: major status: open title: Regression with __hash__ definition and rich comparison operators type: crash versions: Python 2.6 __________________________________ Tracker <[EMAIL PROTECTED]> <http://bugs.python.org/issue1549> __________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
