Aw: Re: Re: Re: Any possible type alias that can also set a default value for a function arg?

[Karsten Hilbert]

> > As per my recent foray into abusing existence-checking for Singleton assurance
> > along such lines as
> >
> > >>> try: self.initialized
> > >>> except AttributeError: print('first instantiation'); self.initialized = True
> >
> > and then changing that to
> >
> > >>> try: self.initialized:bool
>
> But that's not equivalent code.

I learned as much (RHS vs LHS).

But it did not _intuitively_ resonate with the sentiment
"type annotation does not change the running of code".

Karsten