diff options
Diffstat (limited to 'Lib/_collections_abc.py')
| -rw-r--r-- | Lib/_collections_abc.py | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/Lib/_collections_abc.py b/Lib/_collections_abc.py index 33b59aba1b..3d3f07b92e 100644 --- a/Lib/_collections_abc.py +++ b/Lib/_collections_abc.py @@ -453,6 +453,8 @@ Mapping.register(mappingproxy) class MappingView(Sized): + __slots__ = '_mapping', + def __init__(self, mapping): self._mapping = mapping @@ -465,6 +467,8 @@ class MappingView(Sized): class KeysView(MappingView, Set): + __slots__ = () + @classmethod def _from_iterable(self, it): return set(it) @@ -480,6 +484,8 @@ KeysView.register(dict_keys) class ItemsView(MappingView, Set): + __slots__ = () + @classmethod def _from_iterable(self, it): return set(it) @@ -502,6 +508,8 @@ ItemsView.register(dict_items) class ValuesView(MappingView): + __slots__ = () + def __contains__(self, value): for key in self._mapping: if value == self._mapping[key]: |