Python variable assigning problems...

[ICT Ezy]

On Friday, December 11, 2015 at 8:40:18 AM UTC-8, Ian wrote:
> On Fri, Dec 11, 2015 at 9:24 AM, Robin Koch <robin.koch at t-online.de> wrote:
> > Assigning goes from right to left:
> >
> > x,y=y,x=2,3
> >
> > <=>
> >
> > y, x = 2, 3
> > x, y = y, x
> >
> > Otherwise the assignment x, y = y, x would not make any sense, since x and y
> > haven't any values yet.
> >
> > And the execution from right to left is also a good choice, because one
> > would like to do something like:
> >
> > x = y = z = 0
> >
> > Again, assigning from left to right woud lead to errors.
> 
> No, it actually happens left to right. "x = y = z = 0" means "assign 0
> to x, then assign 0 to y, then assign 0 to z." It doesn't mean "assign
> 0 to z, then assign z to y, etc." This works:
> 
> >>> d = d['foo'] = {}
> >>> d
> {'foo': {...}}
> 
> This doesn't:
> 
> >>> del d
> >>> d['foo'] = d = {}
> Traceback (most recent call last):
>   File "<stdin>", line 1, in <module>
> NameError: name 'd' is not defined

Deat Ian,
Thank you very much your answer, but
above answer from Robin Koch and your answer is different. What's the actually process here? I agree with Robin Koch, but your answer is correct. Pl explain differences ?