[Checkins] SVN: zope.interface/branches/gary-crazy-experiments/src/zope/interface/ tests pass (I thought I had done this already...)

Gary Poster gary.poster at canonical.com
Tue Oct 6 21:36:46 EDT 2009 

Log message for revision 104848:
  tests pass (I thought I had done this already...)

Changed:
  U   zope.interface/branches/gary-crazy-experiments/src/zope/interface/README.ru.txt
  U   zope.interface/branches/gary-crazy-experiments/src/zope/interface/README.txt
  U   zope.interface/branches/gary-crazy-experiments/src/zope/interface/interface.py
  U   zope.interface/branches/gary-crazy-experiments/src/zope/interface/tests/test_adapter.py
  U   zope.interface/branches/gary-crazy-experiments/src/zope/interface/tests/unitfixtures.py
  U   zope.interface/branches/gary-crazy-experiments/src/zope/interface/verify.txt

-=-
Modified: zope.interface/branches/gary-crazy-experiments/src/zope/interface/README.ru.txt
===================================================================
--- zope.interface/branches/gary-crazy-experiments/src/zope/interface/README.ru.txt	2009-10-06 20:28:49 UTC (rev 104847)
+++ zope.interface/branches/gary-crazy-experiments/src/zope/interface/README.ru.txt	2009-10-07 01:36:46 UTC (rev 104848)
@@ -38,10 +38,10 @@
 класса `zope.interface.Interface`, который является родительским интерфейсом
 для всех интерфейсов, как `object` - это родительский класс для всех новых
 классов [#create]_. Данный интерфейс не является классом, а является
-Интерфейсом, экземпляром `InterfaceClass`::
+Интерфейсом, экземпляром `InterfaceMetaclass`::
 
   >>> type(IFoo)
-  <class 'zope.interface.interface.InterfaceClass'>
+  <class 'zope.interface.interface.InterfaceMetaclass'>
 
 Мы можем запросить у интерфейса его документацию::
 
@@ -116,7 +116,7 @@
   >>> IFoo.x
   Traceback (most recent call last):
     File "<stdin>", line 1, in ?
-  AttributeError: 'InterfaceClass' object has no attribute 'x'
+  AttributeError: type object 'IFoo' has no attribute 'x'
 
 Методы также предоставляют доступ к сигнатуре метода::
 
@@ -193,7 +193,7 @@
 Мы можем также узнать какие интерфейсы реализуются объектами::
 
   >>> list(zope.interface.implementedBy(Foo))
-  [<InterfaceClass __main__.IFoo>]
+  [<InterfaceMetaclass __main__.IFoo>]
 
 Это ошибка спрашивать про интерфейсы реализуемые не вызываемым объектом::
 
@@ -210,7 +210,7 @@
 Также можно узнать какие интерфейсы предоставляются объектами::
 
   >>> list(zope.interface.providedBy(foo))
-  [<InterfaceClass __main__.IFoo>]
+  [<InterfaceMetaclass __main__.IFoo>]
   >>> list(zope.interface.providedBy(Foo))
   []
 
@@ -225,7 +225,7 @@
   >>> yfoo = zope.interface.implementer(IFoo)(yfoo)
 
   >>> list(zope.interface.implementedBy(yfoo))
-  [<InterfaceClass __main__.IFoo>]
+  [<InterfaceMetaclass __main__.IFoo>]
 
 Надо заметить, что декоратор implementer может модифицировать свои аргументы.
 Вызывающая сторона не должна предполагать, что всегда будет создаваться
@@ -267,7 +267,7 @@
 Теперь мы видим, что Foo уже предоставляет интерфейсы::
 
   >>> list(zope.interface.providedBy(Foo))
-  [<InterfaceClass __main__.IFooFactory>]
+  [<InterfaceMetaclass __main__.IFooFactory>]
   >>> IFooFactory.providedBy(Foo)
   True
 
@@ -289,7 +289,7 @@
   ...         return "Foo(%s)" % self.x
 
   >>> list(zope.interface.providedBy(Foo2))
-  [<InterfaceClass __main__.IFooFactory>]
+  [<InterfaceMetaclass __main__.IFooFactory>]
   >>> IFooFactory.providedBy(Foo2)
   True
 
@@ -328,13 +328,13 @@
   >>> ISpecial.providedBy(foo)
   True
   >>> list(zope.interface.providedBy(foo))
-  [<InterfaceClass __main__.ISpecial>, <InterfaceClass __main__.IFoo>]
+  [<InterfaceMetaclass __main__.ISpecial>, <InterfaceMetaclass __main__.IFoo>]
 
 Мы также можем определить, что интерфейсы напрямую предоставляются
 объектами::
 
   >>> list(zope.interface.directlyProvidedBy(foo))
-  [<InterfaceClass __main__.ISpecial>]
+  [<InterfaceMetaclass __main__.ISpecial>]
 
   >>> newfoo = Foo()
   >>> list(zope.interface.directlyProvidedBy(newfoo))
@@ -352,10 +352,10 @@
   ...         return "I'm special because %s" % self.reason
 
   >>> list(zope.interface.implementedBy(SpecialFoo))
-  [<InterfaceClass __main__.ISpecial>, <InterfaceClass __main__.IFoo>]
+  [<InterfaceMetaclass __main__.ISpecial>, <InterfaceMetaclass __main__.IFoo>]
 
   >>> list(zope.interface.providedBy(SpecialFoo()))
-  [<InterfaceClass __main__.ISpecial>, <InterfaceClass __main__.IFoo>]
+  [<InterfaceMetaclass __main__.ISpecial>, <InterfaceMetaclass __main__.IFoo>]
 
 Иногда мы не хотим наследовать объявления. В этом случае мы можем
 использовать `implementsOnly` вместо `implements`::
@@ -367,10 +367,10 @@
   ...         return "I'm special because %s" % self.reason
 
   >>> list(zope.interface.implementedBy(Special))
-  [<InterfaceClass __main__.ISpecial>]
+  [<InterfaceMetaclass __main__.ISpecial>]
 
   >>> list(zope.interface.providedBy(Special()))
-  [<InterfaceClass __main__.ISpecial>]
+  [<InterfaceMetaclass __main__.ISpecial>]
 
 Внешние объявления
 ------------------
@@ -385,7 +385,7 @@
 
   >>> zope.interface.classImplements(C, IFoo)
   >>> list(zope.interface.implementedBy(C))
-  [<InterfaceClass __main__.IFoo>]
+  [<InterfaceMetaclass __main__.IFoo>]
 
 Мы можем использовать `classImplementsOnly` для исключения наследуемых
 интерфейсов::
@@ -395,7 +395,7 @@
 
   >>> zope.interface.classImplementsOnly(C, ISpecial)
   >>> list(zope.interface.implementedBy(C))
-  [<InterfaceClass __main__.ISpecial>]
+  [<InterfaceMetaclass __main__.ISpecial>]
 
 Объекты объявлений
 ------------------
@@ -425,7 +425,7 @@
 интерфейсов в итоговом объявления::
 
   >>> list(zope.interface.implementedBy(Special2))
-  [<InterfaceClass __main__.IFoo>, <InterfaceClass __main__.ISpecial>]
+  [<InterfaceMetaclass __main__.IFoo>, <InterfaceMetaclass __main__.ISpecial>]
 
 Наследование интерфейсов
 ========================
@@ -441,7 +441,7 @@
   ...         """eek blah blah"""
 
   >>> IBlat.__bases__
-  (<InterfaceClass zope.interface.Interface>,)
+  (<InterfaceMetaclass zope.interface.Interface>,)
 
   >>> class IBaz(IFoo, IBlat):
   ...     """Baz blah"""
@@ -450,7 +450,7 @@
   ...
 
   >>> IBaz.__bases__
-  (<InterfaceClass __main__.IFoo>, <InterfaceClass __main__.IBlat>)
+  (<InterfaceMetaclass __main__.IFoo>, <InterfaceMetaclass __main__.IBlat>)
 
   >>> names = list(IBaz)
   >>> names.sort()
@@ -550,7 +550,7 @@
 
   >>> baz_implements = zope.interface.implementedBy(Baz)
   >>> baz_implements.__bases__
-  (<InterfaceClass __main__.IBaz>,)
+  (<InterfaceMetaclass __main__.IBaz>,)
 
   >>> baz_implements.extends(IFoo)
   True
@@ -565,10 +565,10 @@
 
   >>> baz_implements.__sro__
   (<implementedBy __main__.Baz>,
-   <InterfaceClass __main__.IBaz>,
-   <InterfaceClass __main__.IFoo>,
-   <InterfaceClass __main__.IBlat>,
-   <InterfaceClass zope.interface.Interface>)
+   <InterfaceMetaclass __main__.IBaz>,
+   <InterfaceMetaclass __main__.IFoo>,
+   <InterfaceMetaclass __main__.IBlat>,
+   <InterfaceMetaclass zope.interface.Interface>)
 
 Помеченные значения
 ===================
@@ -598,7 +598,7 @@
   ...     __call__.return_type = IBaz
 
   >>> IBazFactory['__call__'].getTaggedValue('return_type')
-  <InterfaceClass __main__.IBaz>
+  <InterfaceMetaclass __main__.IBaz>
 
 Помеченные значения также могут быть определены внутри определения
 интерфейса::
@@ -683,7 +683,7 @@
   >>> I(0)
   Traceback (most recent call last):
   ...
-  TypeError: ('Could not adapt', 0, <InterfaceClass __main__.I>)
+  TypeError: ('Could not adapt', 0, <InterfaceMetaclass __main__.I>)
 
 только если альтернативное значение не передано как второй аргумент::
 
@@ -725,7 +725,7 @@
   >>> I(0)
   Traceback (most recent call last):
   ...
-  TypeError: ('Could not adapt', 0, <InterfaceClass __main__.I>)
+  TypeError: ('Could not adapt', 0, <InterfaceMetaclass __main__.I>)
 
 
 __adapt__

Modified: zope.interface/branches/gary-crazy-experiments/src/zope/interface/README.txt
===================================================================
--- zope.interface/branches/gary-crazy-experiments/src/zope/interface/README.txt	2009-10-06 20:28:49 UTC (rev 104847)
+++ zope.interface/branches/gary-crazy-experiments/src/zope/interface/README.txt	2009-10-07 01:36:46 UTC (rev 104848)
@@ -32,14 +32,14 @@
   ...    def bar(q, r=None):
   ...        """bar blah blah"""
 
-In the example above, we've created an interface, `IFoo`.  We
-subclassed `zope.interface.Interface`, which is an ancestor interface for
-all interfaces, much as `object` is an ancestor of all new-style
-classes [#create]_.   The interface is not a class, it's an Interface,
-an instance of `InterfaceClass`::
+In the example above, we've created an interface, `IFoo`.  We subclassed
+`zope.interface.Interface`, which is an ancestor interface for all
+interfaces, much as `object` is an ancestor of all new-style classes
+[#create]_.   The interface is not a standard Python class, but an
+Interface, an instance of `InterfaceMetaclass`::
 
   >>> type(IFoo)
-  <class 'zope.interface.interface.InterfaceClass'>
+  <class 'zope.interface.interface.InterfaceMetaclass'>
 
 We can ask for the interface's documentation::
 
@@ -105,13 +105,13 @@
   >>> names
   ['bar', 'x']
 
-Remember that interfaces aren't classes. You can't access attribute
-definitions as attributes of interfaces::
+Remember that interfaces do not provide the API they describe. You can't
+access attribute definitions as attributes of interfaces::
 
   >>> IFoo.x
   Traceback (most recent call last):
     File "<stdin>", line 1, in ?
-  AttributeError: 'InterfaceClass' object has no attribute 'x'
+  AttributeError: type object 'IFoo' has no attribute 'x'
 
 Methods provide access to the method signature::
 
@@ -193,7 +193,7 @@
 We can also ask what interfaces are implemented by an object::
 
   >>> list(zope.interface.implementedBy(Foo))
-  [<InterfaceClass __main__.IFoo>]
+  [<InterfaceMetaclass __main__.IFoo>]
 
 It's an error to ask for interfaces implemented by a non-callable
 object::
@@ -211,7 +211,7 @@
 Similarly, we can ask what interfaces are provided by an object::
 
   >>> list(zope.interface.providedBy(foo))
-  [<InterfaceClass __main__.IFoo>]
+  [<InterfaceMetaclass __main__.IFoo>]
   >>> list(zope.interface.providedBy(Foo))
   []
 
@@ -226,7 +226,7 @@
   >>> yfoo = zope.interface.implementer(IFoo)(yfoo)
 
   >>> list(zope.interface.implementedBy(yfoo))
-  [<InterfaceClass __main__.IFoo>]
+  [<InterfaceMetaclass __main__.IFoo>]
 
 Note that the implementer decorator may modify it's argument. Callers
 should not assume that a new object is created.
@@ -267,7 +267,7 @@
 And then, we'll see that Foo provides some interfaces::
 
   >>> list(zope.interface.providedBy(Foo))
-  [<InterfaceClass __main__.IFooFactory>]
+  [<InterfaceMetaclass __main__.IFooFactory>]
   >>> IFooFactory.providedBy(Foo)
   True
 
@@ -289,7 +289,7 @@
   ...         return "Foo(%s)" % self.x
 
   >>> list(zope.interface.providedBy(Foo2))
-  [<InterfaceClass __main__.IFooFactory>]
+  [<InterfaceMetaclass __main__.IFooFactory>]
   >>> IFooFactory.providedBy(Foo2)
   True
 
@@ -328,12 +328,12 @@
   >>> ISpecial.providedBy(foo)
   True
   >>> list(zope.interface.providedBy(foo))
-  [<InterfaceClass __main__.ISpecial>, <InterfaceClass __main__.IFoo>]
+  [<InterfaceMetaclass __main__.ISpecial>, <InterfaceMetaclass __main__.IFoo>]
 
 We can find out what interfaces are directly provided by an object::
 
   >>> list(zope.interface.directlyProvidedBy(foo))
-  [<InterfaceClass __main__.ISpecial>]
+  [<InterfaceMetaclass __main__.ISpecial>]
 
   >>> newfoo = Foo()
   >>> list(zope.interface.directlyProvidedBy(newfoo))
@@ -351,10 +351,10 @@
   ...         return "I'm special because %s" % self.reason
 
   >>> list(zope.interface.implementedBy(SpecialFoo))
-  [<InterfaceClass __main__.ISpecial>, <InterfaceClass __main__.IFoo>]
+  [<InterfaceMetaclass __main__.ISpecial>, <InterfaceMetaclass __main__.IFoo>]
 
   >>> list(zope.interface.providedBy(SpecialFoo()))
-  [<InterfaceClass __main__.ISpecial>, <InterfaceClass __main__.IFoo>]
+  [<InterfaceMetaclass __main__.ISpecial>, <InterfaceMetaclass __main__.IFoo>]
 
 Sometimes, you don't want to inherit declarations.  In that case, you
 can use `implementsOnly`, instead of `implements`::
@@ -366,10 +366,10 @@
   ...         return "I'm special because %s" % self.reason
 
   >>> list(zope.interface.implementedBy(Special))
-  [<InterfaceClass __main__.ISpecial>]
+  [<InterfaceMetaclass __main__.ISpecial>]
 
   >>> list(zope.interface.providedBy(Special()))
-  [<InterfaceClass __main__.ISpecial>]
+  [<InterfaceMetaclass __main__.ISpecial>]
 
 External declarations
 ---------------------
@@ -385,7 +385,7 @@
 
   >>> zope.interface.classImplements(C, IFoo)
   >>> list(zope.interface.implementedBy(C))
-  [<InterfaceClass __main__.IFoo>]
+  [<InterfaceMetaclass __main__.IFoo>]
 
 We can use `classImplementsOnly` to exclude inherited interfaces::
 
@@ -394,7 +394,7 @@
 
   >>> zope.interface.classImplementsOnly(C, ISpecial)
   >>> list(zope.interface.implementedBy(C))
-  [<InterfaceClass __main__.ISpecial>]
+  [<InterfaceMetaclass __main__.ISpecial>]
 
 
 
@@ -426,7 +426,7 @@
 interfaces in the resulting declaration is different::
 
   >>> list(zope.interface.implementedBy(Special2))
-  [<InterfaceClass __main__.IFoo>, <InterfaceClass __main__.ISpecial>]
+  [<InterfaceMetaclass __main__.IFoo>, <InterfaceMetaclass __main__.ISpecial>]
 
 
 Interface Inheritance
@@ -443,7 +443,7 @@
   ...         """eek blah blah"""
 
   >>> IBlat.__bases__
-  (<InterfaceClass zope.interface.Interface>,)
+  (<InterfaceMetaclass zope.interface.Interface>,)
 
   >>> class IBaz(IFoo, IBlat):
   ...     """Baz blah"""
@@ -452,7 +452,7 @@
   ...
 
   >>> IBaz.__bases__
-  (<InterfaceClass __main__.IFoo>, <InterfaceClass __main__.IBlat>)
+  (<InterfaceMetaclass __main__.IFoo>, <InterfaceMetaclass __main__.IBlat>)
 
   >>> names = list(IBaz)
   >>> names.sort()
@@ -552,7 +552,7 @@
 
   >>> baz_implements = zope.interface.implementedBy(Baz)
   >>> baz_implements.__bases__
-  (<InterfaceClass __main__.IBaz>,)
+  (<InterfaceMetaclass __main__.IBaz>,)
 
   >>> baz_implements.extends(IFoo)
   True
@@ -567,10 +567,10 @@
 
   >>> baz_implements.__sro__
   (<implementedBy __main__.Baz>,
-   <InterfaceClass __main__.IBaz>,
-   <InterfaceClass __main__.IFoo>,
-   <InterfaceClass __main__.IBlat>,
-   <InterfaceClass zope.interface.Interface>)
+   <InterfaceMetaclass __main__.IBaz>,
+   <InterfaceMetaclass __main__.IFoo>,
+   <InterfaceMetaclass __main__.IBlat>,
+   <InterfaceMetaclass zope.interface.Interface>)
 
 
 Tagged Values
@@ -601,7 +601,7 @@
   ...     __call__.return_type = IBaz
 
   >>> IBazFactory['__call__'].getTaggedValue('return_type')
-  <InterfaceClass __main__.IBaz>
+  <InterfaceMetaclass __main__.IBaz>
 
 Tagged values can also be defined from within an interface definition::
 
@@ -688,7 +688,7 @@
   >>> I(0)
   Traceback (most recent call last):
   ...
-  TypeError: ('Could not adapt', 0, <InterfaceClass __main__.I>)
+  TypeError: ('Could not adapt', 0, <InterfaceMetaclass __main__.I>)
 
 
 
@@ -731,7 +731,7 @@
   >>> I(0)
   Traceback (most recent call last):
   ...
-  TypeError: ('Could not adapt', 0, <InterfaceClass __main__.I>)
+  TypeError: ('Could not adapt', 0, <InterfaceMetaclass __main__.I>)
 
 __adapt__
 ---------

Modified: zope.interface/branches/gary-crazy-experiments/src/zope/interface/interface.py
===================================================================
--- zope.interface/branches/gary-crazy-experiments/src/zope/interface/interface.py	2009-10-06 20:28:49 UTC (rev 104847)
+++ zope.interface/branches/gary-crazy-experiments/src/zope/interface/interface.py	2009-10-07 01:36:46 UTC (rev 104848)
@@ -197,7 +197,7 @@
             adapter = hook(self, obj)
             if adapter is not None:
                 return adapter
-    
+
 InterfaceBase = InterfaceBasePy
 
 adapter_hooks = []
@@ -449,8 +449,10 @@
         if attrs is None:
             attrs = {}
 
-        if not bases: # (I.e., this is the root "interface.")
-            del attrs['__metaclass__'] # Interfaces don't want "real" attrs.
+        if not bases: # (That is, this is the root "interface" instance, or a
+                      # test fixture.)
+            # Interfaces don't want "real" attrs.
+            attrs.pop('__metaclass__', None)
 
         if __module__ is None:
             __module__ = attrs.get('__module__')
@@ -707,8 +709,7 @@
         return c > 0
 
 
-class Interface:
-    __metaclass__ = InterfaceMetaclass
+Interface = InterfaceMetaclass("Interface", __module__ = 'zope.interface')
 
 
 class Attribute(Element):

Modified: zope.interface/branches/gary-crazy-experiments/src/zope/interface/tests/test_adapter.py
===================================================================
--- zope.interface/branches/gary-crazy-experiments/src/zope/interface/tests/test_adapter.py	2009-10-06 20:28:49 UTC (rev 104847)
+++ zope.interface/branches/gary-crazy-experiments/src/zope/interface/tests/test_adapter.py	2009-10-07 01:36:46 UTC (rev 104848)
@@ -94,17 +94,17 @@
 def test_multi_adapter_w_default():
     """
     >>> registry = AdapterRegistry()
-    
+
     >>> registry.register([None, None], IB1, 'bob', 'A0')
 
     >>> registry.lookup((IF1, IR1), IB0, 'bob')
     'A0'
-    
+
     >>> registry.register([None, IR0], IB1, 'bob', 'A1')
 
     >>> registry.lookup((IF1, IR1), IB0, 'bob')
     'A1'
-    
+
     >>> registry.lookup((IF1, IR1), IB0, 'bruce')
 
     >>> registry.register([None, IR1], IB1, 'bob', 'A2')
@@ -192,7 +192,7 @@
     """
     >>> registry = AdapterRegistry()
     >>> default = object()
-    
+
     >>> class Object1(object):
     ...     zope.interface.implements(IF0)
     >>> class Object2(object):
@@ -255,7 +255,7 @@
     ...
     TypeError: ('Could not adapt',
                 <zope.interface.tests.test_adapter.X object at ...>,
-                <InterfaceClass zope.interface.tests.test_adapter.IY>)
+                <InterfaceMetaclass zope.interface.tests.test_adapter.IY>)
 
     But after we declare an interface on the class `X`, it should pass:
 

Modified: zope.interface/branches/gary-crazy-experiments/src/zope/interface/tests/unitfixtures.py
===================================================================
--- zope.interface/branches/gary-crazy-experiments/src/zope/interface/tests/unitfixtures.py	2009-10-06 20:28:49 UTC (rev 104847)
+++ zope.interface/branches/gary-crazy-experiments/src/zope/interface/tests/unitfixtures.py	2009-10-07 01:36:46 UTC (rev 104848)
@@ -16,7 +16,7 @@
 $Id$
 """
 from zope.interface import Interface, invariant
-from zope.interface.interface import Attribute
+from zope.interface.interface import Attribute, InterfaceMetaclass
 from zope.interface.exceptions import Invalid
 
 class mytest(Interface):
@@ -112,11 +112,11 @@
 class Blah(object):
     pass
 
-new = Interface.__class__
-FunInterface = new('FunInterface')
-BarInterface = new('BarInterface', [FunInterface])
-BobInterface = new('BobInterface')
-BazInterface = new('BazInterface', [BobInterface, BarInterface])
+FunInterface = InterfaceMetaclass('FunInterface')
+BarInterface = InterfaceMetaclass('BarInterface', [FunInterface])
+BobInterface = InterfaceMetaclass('BobInterface')
+BazInterface = InterfaceMetaclass('BazInterface',
+                                  [BobInterface, BarInterface])
 
 # fixtures for invariant tests
 def ifFooThenBar(obj):
@@ -130,8 +130,8 @@
     foo = getattr(obj, 'foo', None)
     bar = getattr(obj, 'bar', None)
     if foo is not None and isinstance(foo, type(bar)):
-        # type checking should be handled elsewhere (like, say, 
-        # schema); these invariants should be intra-interface 
+        # type checking should be handled elsewhere (like, say,
+        # schema); these invariants should be intra-interface
         # constraints.  This is a hacky way to do it, maybe, but you
         # get the idea
         if not bar > foo:

Modified: zope.interface/branches/gary-crazy-experiments/src/zope/interface/verify.txt
===================================================================
--- zope.interface/branches/gary-crazy-experiments/src/zope/interface/verify.txt	2009-10-06 20:28:49 UTC (rev 104847)
+++ zope.interface/branches/gary-crazy-experiments/src/zope/interface/verify.txt	2009-10-07 01:36:46 UTC (rev 104848)
@@ -57,7 +57,7 @@
 
 >>> verifyObject(IFoo, Foo())
 Traceback (most recent call last):
-BrokenImplementation: An object has failed to implement interface <InterfaceClass __builtin__.IFoo>
+BrokenImplementation: An object has failed to implement interface <InterfaceMetaclass __builtin__.IFoo>
     The y attribute was not provided.
 
 >>> class Foo(object):
@@ -67,7 +67,7 @@
 
 >>> verifyObject(IFoo, Foo())
 Traceback (most recent call last):
-BrokenImplementation: An object has failed to implement interface <InterfaceClass __builtin__.IFoo>
+BrokenImplementation: An object has failed to implement interface <InterfaceMetaclass __builtin__.IFoo>
     The x attribute was not provided.
 
 If an attribute is implemented as a property that raises an AttributeError
@@ -84,7 +84,7 @@
 
 >>> verifyObject(IFoo, Foo())
 Traceback (most recent call last):
-BrokenImplementation: An object has failed to implement interface <InterfaceClass __builtin__.IFoo>
+BrokenImplementation: An object has failed to implement interface <InterfaceMetaclass __builtin__.IFoo>
     The x attribute was not provided.
 
 Any other exception raised by a property will propagate to the caller of

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