Variable interpolation with getattr

[Rich]

Andrew,

   This looks interesting, but doesn't work for me inside the class,
such as within the constructor which can be use for initialization.  I
think the post from Alex Martelli may have the key with __slots__ and
setattr, but this stuff isn't covered in detail in my "Learning
Python" book.

Thanks,
Rich

   class C:
     self.attr = ['city','state','zip']
     def __init__(address)
       for a in self.attr:
         self.a = address[a]
             ^^          



Andrew Bennetts <andrew-pythonlist at puzzling.org> wrote in message news:<mailman.1045637395.17700.python-list at python.org>...
> On Tue, Feb 18, 2003 at 10:36:53PM -0800, Rich wrote:
> > Hello,
> > 
> > New to Python with a Perl background, and I've searched a good bit on
> > this and can't seem to find the answer.  I'd like to know if it is
> > possible to use a variable to hold the name of an instance attribute 
> > e.g
> > 
> >      x = 'street'
> > self.x = '123 Albermarle Street'
> > 
> > such that x in self.x gets evaluated to 'street' and thus self.x
> > becomes actually self.street.  I've seen a number of (possibly
> 
> It looks like you want is getattr:
>     foo = getattr(self, x)
> 
> e.g.:
>     >>> class C:
>     ...     x = 1
>     ... 
>     >>> name = 'x'
>     >>> obj = C()
>     >>> getattr(obj, name)
>     1
> 
> -Andrew.