Why forbidden? ..

pyramid_acl.py

class UserContainer(ModelContainer):
    __acl__ = [
        (Allow, 'admin', ('add', 'edit', 'delete')),
        (Deny, Everyone, ALL_PERMISSIONS)
    ]

@view_config(renderer='users_browse.mako', context=UserContainer, permission='view')
def browse(request):
    return dict()


=== DEBUG OUTPUT ===
2011-01-26 13:04:25,785 debug_authorization of url http://127.0.0.1:6543/users
(view name u'' against context Forbidden("debug_authorization of url http://127.0.0.1:6543/users 
(view name u'' against context <riotoustools.models.root.UserContainer object at 0x104588350>):

ACLDenied permission 'view' via ACE ('Deny', 'system.Everyone', <pyramid.security.AllPermissionsList object at 0x10226dd90>) in ACL [
	('Allow', 'admin', ('add', 'edit', 'delete')),
	('Deny', 'system.Everyone', <pyramid.security.AllPermissionsList object at 0x10226dd90>)
] on context <riotoustools.models.root.UserContainer object at 0x104588350> for principals [
	'system.Everyone', 'system.Authenticated', 1, Group(id=1, name=admin)
]",)): Allowed (no permission registered)