Make lazy implementation python3 compatible

src/grokcore/annotation/lazy.py

@@ -19,7 +19,7 @@
 import zope.annotation.interfaces
 import zope.cachedescriptors.property
 
-from zope.interface import implements
+from zope.interface import implementer
 from zope.location import Location
 from zope.annotation.interfaces import IAnnotations
 from grokcore.annotation.interfaces import IAnnotationFactory
@@ -89,8 +89,8 @@ def _load(self, key, default):
         return getattr(storage, key, default)
 
 
+@implementer(IAnnotationFactory)
 class LazyAnnotationFactory(object):
-    implements(IAnnotationFactory)
 
     def __init__(self, factory, name):
         self.factory = factory

src/grokcore/annotation/tests/annotation/lazy.py

@@ -9,14 +9,14 @@
 its attributes:
 
   >>> lazyannotation = ILazy(manfred)
-  >>> lazyannotation.lazy_attribute
-  u'lazily waiting for a value.'
+  >>> str(lazyannotation.lazy_attribute)
+  'lazily waiting for a value.'
 
 Note how just "getting" the annotation attribute's default value (as no
 explicit value has been set before for this attribute), does not create
 a new annotation objects:
 
-  >>> print manfred.__dict__
+  >>> print(manfred.__dict__)
   {}
 
 If nothing was explicitly set before, we still can query for the annotation
@@ -29,37 +29,37 @@
 actually do store a new annotation object:
 
   >>> lazyannotation.lazy_attribute = u'We have a value!'
-  >>> print manfred.__dict__
+  >>> print(manfred.__dict__)
   {'__annotations__': <...OOBTree object at ...>}
 
-  >>> print list(manfred.__dict__['__annotations__'].keys())
+  >>> print(list(manfred.__dict__['__annotations__'].keys()))
   ['lazy.annotation.custom.name']
 
 Now the queryAnnotation will indeed return the annotations object:
 
   >>> grok.queryAnnotation(manfred, ILazy)
   <...Lazy object at ...>
 
-  >>> grok.queryAnnotation(manfred, ILazy).lazy_attribute
-  u'We have a value!'
+  >>> str(grok.queryAnnotation(manfred, ILazy).lazy_attribute)
+  'We have a value!'
 
 We can also delete the lazy annotation and the previously stored annotation
 now is gone:
 
   >>> grok.deleteAnnotation(manfred, ILazy)
   True
 
-  >>> print manfred.__dict__
+  >>> print(manfred.__dict__)
   {'__annotations__': <...OOBTree object at ...>}
 
-  >>> print list(manfred.__dict__['__annotations__'].keys())
+  >>> print(list(manfred.__dict__['__annotations__'].keys()))
   []
 
 Note how the default schema value for the lazy attribute still "responds":
 
   >>> lazyannotation = ILazy(manfred)
-  >>> lazyannotation.lazy_attribute
-  u'lazily waiting for a value.'
+  >>> str(lazyannotation.lazy_attribute)
+  'lazily waiting for a value.'
 
 """