Prelimenary python 3 support

setup.py

@@ -77,7 +77,7 @@ def read(*rnames):
         'zope.app.publication',
         'zope.component >= 3.8.0',
         'zope.configuration',
-        'zope.container',
+        'zope.container >= 4.0.0a2',
         'zope.error',
         'zope.event',
         'zope.interface',

src/zope/app/appsetup/appsetup.py

@@ -26,8 +26,8 @@
 from zope.security.management import system_user
 import zope.processlifetime
 
+@zope.interface.implementer(IParticipation)
 class SystemConfigurationParticipation(object):
-    zope.interface.implements(IParticipation)
 
     principal = system_user
     interaction = None
@@ -129,7 +129,7 @@ def database(db):
         if db.endswith('.py'):
             # Python source, exec it
             globals = {}
-            execfile(db, globals)
+            exec(compile(open(db).read(), db, 'exec'), globals)
             if 'DB' in globals:
                 db = globals['DB']
             else:

src/zope/app/appsetup/bootstrap.py

@@ -119,7 +119,7 @@ def addUtility(root_folder, utility_type, utility_factory,
     utility = package[name]
 
     # Set additional attributes on the utility
-    for k, v in kw.iteritems():
+    for k, v in kw.items():
         setattr(utility, k, v)
     return utility