[Python-ideas] Revisiting Immutable Mappings

[Serhiy Storchaka]

11.10.18 07:20, João Santos пише:
> One important difference between MappingProxyType and a "proper" 
> frozendict, as analog to frozenset, is that MappingProxyType doesn't 
> have any method to return mutated versions of itself.

MappingProxyType.copy()?