[Python-Dev] PEP 572: Assignment Expressions

[Mike Miller]

On 2018-04-23 14:19, Barry Warsaw wrote:
> Me too.  Plus we *already* have precedence for spelling name bindings in similar constructs, such as import statements, with statements, and exceptions.  It seems like a natural and Pythonic approach to extend that same spelling to binding expressions rather than introducing new, weird, symbols.

We've survived for decades without this syntax, so don't think the need is so 
great that we need to rush it.  Let's not "jump the shark."  :D

In my opinion, "EXPR as NAME" is the only version worthy enough for the 
readability of Python.  It reads like psuedo-code, as advocates have described 
in the past, and already used frequently in a fuzzy, non-dogmatic manner.

The point about the potential of a bug in the "with" statement is worth serious 
consideration however.  I don't have a problem with it, but if deemed 
intolerable there was an additional solution I read upthread, believe by Kirill 
and Steve.

Merely that, since all current use cases are in the if/while/comprehension 
statements, it might be a good idea to limit binding-expressions there to avoid 
issues/overuse elsewhere.

Well, there are a number of mitigations to the "with" issue that could be 
considered.

(Hoping that this is my last post on the subject.)

-Mike