Namespaces are widely used in Python, but it appear that creating a namespace
has no short form, like [] for list or {} for dict, but requires the lengthy
types.SimpleNamespace, with prior import of types.

So an idea is to make a short form with:

    ns = (answer= 42)

Which resembles the types.SimpleNamespace(answer= 42), but leaves out a lot of
typing.

Syntax for an empty namespace should then be determined.