[Python-Dev] PEP 572: Assignment Expressions

[Jeroen Demeyer]

On 2018-04-18 02:13, Chris Angelico wrote:
> I'm much happier promoting a full-featured assignment expression than
> something that can only be used in a limited set of situations. Is
> there reason to believe that extensions to the := operator might take
> it in a different direction? If not, there's very little to lose by
> permitting any assignment target, and then letting style guides frown
> on it if they like.

This is a very good argument: why artificially restrict the operator?

This reminds me of the artificial restriction of decorator syntax (why 
is @foo()() not legal?). There was never a rationale given for that and 
now we are stuck with it.