Dict type which behaves like the Optional Chaining operator https://github.com/tc39/proposal-optional-chaining

dict2.py

class NoneDict:
    def __truedive__(self, key):
        return self

    def __or__(self, key):
        return self

    def __repr__(self):
        return "NoneDict"


class Dict2(dict):
    def __truediv__(self, key):
        v = self[key]

        if isinstance(v, dict):
            return Dict2(v)

        return v

    def __or__(self, key):
        if key not in self:
            return NoneDict()

        v = self[key]

        if isinstance(v, dict):
            return Dict2(v)

        return v


d = Dict2({"a": {"b": 2}})

print(d / "a")
print(d / "a" / "b")
print(d | "a")
print(d | "aa")
print(d | "aa" | "b")