_trees_dict: define __slots__

diff --git a/pym/portage/__init__.py b/pym/portage/__init__.py
index e4abab371f3d39c28f3c992fa91ac0f13aeb7039..27353a1e8b2d5ba2efd033b33767b00637d8a943 100644 (file)
--- a/pym/portage/__init__.py
+++ b/pym/portage/__init__.py
@@ -480,6 +480,7 @@ def portageexit():
                close_portdbapi_caches()
 
 class _trees_dict(dict):
+       __slots__ = ('_running_eroot', '_target_eroot',)
        def __init__(self, *pargs, **kargs):
                dict.__init__(self, *pargs, **kargs)
                self._running_eroot = None