Accessing class instance variables with vars().

Andrew Bennetts andrew-pythonlist at puzzling.org
Wed Feb 5 13:35:03 CET 2003


On Wed, Feb 05, 2003 at 04:04:48AM -0800, Peter Abel wrote:
> Arcady Genkin <agenkin at thpoon.com> wrote in message news:<86vfzzqwv4.fsf at tea.thpoon.com>...
> > How would I make the following code print both class variable 'foo'
> > and the local variable 'bar' through a variable mapping?
> > 
> > class A:
> >     foo = 1
> >     def show( self ):
> >         bar = 2
> >         #print '%(foo)d %(bar)d' % vars(self)
>           print '%(foo)s %(bar)s'%dict(vars().items()+vars(A).items())
> > 
> > This does not work since vars(self) returns an empty dictionary.
> > 
> > Many thanks in advance,
> 
> The replacement of the print line should work.
> May be there's still a better possibility to join 2 dictionaries.

I think I'd probably join them with:
    d = vars()
    d.update(vars(A))
    print '....' % d

But then it's not a one-liner anymore.

-Andrew.






More information about the Python-list mailing list