What is the idiomatic way of reusing key/values of TypedDict when total=False and True is needed?

[andresdelfino]

Hi!

I construct a dictionary in several steps, and during that time I only want to guarantee that it doesn't have invalid key names or value types (total=False)).

Once the dictionary is constructed, I want to guarantee that it contains all the keys with the valid value types (total=True).

What is the idiomatic way to reuse the same key name/value type definition? Should I use the functional syntax and make two calls with the same dictionary specifying keys and values? If I understand correctly, inheritance is not an option.