Nested scopes, and augmented assignment

[Bruno Desthuilliers]

Antoon Pardon wrote:
(snip)
> Well no matter what explanation you give to it, and I understand how it
> works,

I'm not sure of this.

> I keep finding it strange that something like
> 
>   k = [0]
>   def f(i):
>     k[0] += i
>   f(2)
> 
> works but the following doesn't
> 
>   k = 0
>   def f(i):
>     k += i
>   f(2)
> 
> 
> Personnaly I see no reason why finding a name/identifier on the
> leftside of an assignment should depend on whether the name
> is the target or prefix for the target.
> 

It's not about "finding a name/identifier", it's about the difference
between (re)binding a name and mutating an object.


-- 
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in 'onurb at xiludom.gro'.split('@')])"