[Python-Dev] PEP 572: Assignment Expressions

Steven D'Aprano steve at pearwood.info
Mon Apr 30 20:59:03 EDT 2018

On Mon, Apr 30, 2018 at 05:27:08PM -0700, Larry Hastings wrote:
> On 04/30/2018 07:30 AM, Mark Shannon wrote:
> >Would Python be better with two subtly different assignment operators?
> >The answer of "no" seems self evident to me.
> Maybe this has been covered in the thread earlier--if so, I missed it, 
> sorry.  But ISTM that Python already has multiple ways to perform an 
> assignment.
> All these statements assign to x:
[snip SEVEN distinct binding operations]

> I remain -1 on 572, but I'm not sure it can genuinely be said that 
> Python only has one way to assign a value to a variable.

"Not sure"? Given that you listed seven ways, how much more evidence do 
you need to conclude that it is simply wrong to say that Python has a 
single way to assign a value to a name?



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