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bpo-36144: Dictionary Union (PEP 584) (#12088)

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Brandt Bucher 2020-02-24 19:47:34 -08:00 • committed by GitHub
parent ba22e8f174
commit eb8ac57af2
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4 changed files with 107 additions and 18 deletions
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20
Lib/collections/__init__.py
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@ -994,6 +994,26 @@ class UserDict(_collections_abc.MutableMapping):
# Now, add the methods in dicts but not in MutableMapping
def __repr__(self): return repr(self.data)
def __or__(self, other):
if isinstance(other, UserDict):
return self.__class__(self.data | other.data)
if isinstance(other, dict):
return self.__class__(self.data | other)
return NotImplemented
def __ror__(self, other):
if isinstance(other, UserDict):
return self.__class__(other.data | self.data)
if isinstance(other, dict):
return self.__class__(other | self.data)
return NotImplemented
def __ior__(self, other):
if isinstance(other, UserDict):
self.data |= other.data
else:
self.data |= other
return self
def __copy__(self):
inst = self.__class__.__new__(self.__class__)
inst.__dict__.update(self.__dict__)