diff options
Diffstat (limited to 'Lib/collections')
| -rw-r--r-- | Lib/collections/__init__.py | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/Lib/collections/__init__.py b/Lib/collections/__init__.py index 5860787..f07ee14 100644 --- a/Lib/collections/__init__.py +++ b/Lib/collections/__init__.py @@ -1011,8 +1011,8 @@ class ChainMap(_collections_abc.MutableMapping): def __iter__(self): d = {} - for mapping in reversed(self.maps): - d.update(dict.fromkeys(mapping)) # reuses stored hash values if possible + for mapping in map(dict.fromkeys, reversed(self.maps)): + d |= mapping # reuses stored hash values if possible return iter(d) def __contains__(self, key): |