diff options
Diffstat (limited to 'Lib/collections/__init__.py')
| -rw-r--r-- | Lib/collections/__init__.py | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/Lib/collections/__init__.py b/Lib/collections/__init__.py index 5d75501..9c25a2d 100644 --- a/Lib/collections/__init__.py +++ b/Lib/collections/__init__.py @@ -1001,7 +1001,7 @@ class ChainMap(_collections_abc.MutableMapping): def __iter__(self): d = {} for mapping in reversed(self.maps): - d.update(mapping) # reuses stored hash values if possible + d.update(dict.fromkeys(mapping)) # reuses stored hash values if possible return iter(d) def __contains__(self, key): |