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bpo-43245: Add keyword argument support to ChainMap.new_child() (GH-24788)

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Kamil Turek 2021-03-14 04:15:44 +01:00 • committed by GitHub
parent 9c376bc1c4
commit 9923df9641
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4 changed files with 18 additions and 6 deletions
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7
Lib/collections/__init__.py
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@ -1010,12 +1010,15 @@ class ChainMap(_collections_abc.MutableMapping):
__copy__ = copy
def new_child(self, m=None): # like Django's Context.push()
def new_child(self, m=None, **kwargs): # like Django's Context.push()
'''New ChainMap with a new map followed by all previous maps.
If no map is provided, an empty dict is used.
Keyword arguments update the map or new empty dict.
'''
if m is None:
m = {}
m = kwargs
elif kwargs:
m.update(kwargs)
return self.__class__(m, *self.maps)
@property