It gives you access to the original dictionary from a view. I've not played with it yet but I guess that means you can modify it. EDIT: apparently not: >>

It gives you access to the original dictionary from a view. I've not played with it yet but I guess that means you can modify it. EDIT: apparently not: >>> keys.mapping mappingproxy({'Diane': 70, 'Bob': 78, 'Emma': 84}) In this case I actually don't know what the use case is :shrug: