[Python-Dev] New syntax for 'dynamic' attribute access

["Martin v. Löwis"]

Ron Adam schrieb:
> I think it's gets a bit awkward in some situations.
> 
> 
>     if bar->'__%s__' % attr < -42: print 'Hello World'
> 
>     if bar.['__%s__' % attr] > -42: print 'Hello World'
> 
> 
> To me it's easier to parse the second one visually.


Ah, precedence.

It definitly should be a bracketed form, or else people
always wonder what the precedence is, and add parenthesis
anyway just to be on the safe side.

BTW, which of these would be correct

  (a).[b]
  (a.)[b]
  a.[(b)]
  a.([b])
  a   .  [  b  ]

and what is the semantics of

  a.[42]

Regards,
Martin