Revisting an old idea...

So, it now seems certain that Python is going to have some type hinting.  I'm not too fond of the proposed syntax although it is mentioned that some special syntax may be introduced at a later time if this idea proves to be useful.  However, it does not look like an adaptation of my 10 year old idea [*] which I still prefer over the discussed alternatives, would stand a chance...

[*] By this, I mean using where as a block introducing keyword - not necessarily all the specific examples mentioned which were meant to mirror the idea of GvR's blog post at that time.