Reference to self not passed to member function

[James Stroud]

Thanks to both Scott and Fredrik.

James

On Friday 06 May 2005 04:22 pm, Scott David Daniels wrote:
> James Stroud wrote:
> > Hello All,
> >
> > I did this:
> >
> > py> class bob(object):
> > ...   def __init__(self,**kwargs):
> > ...     for fname,func in kwargs.items():
> > ...       setattr(self, fname, lambda *args : func(*args))
> > ...
> > py> def doit():
> > ...   print "wuzzup?"
> > ...
> > py> abob = bob(doit=doit)
> > py>
> > py> abob.doit()
> > wuzzup?
> >
> > Much to my surprise, this works fine.
> >
>  > 1. What exactly is going on?
>
> This behavior shouldn't surprise you.  You stored a function as
> an attribute.  In fact you could have simply done:
> py> class bob(object):
> ...   def __init__(self,**kwargs):
> ...       for fname, function in kwargs.items():
> ...           setattr(self, fname, function)
>
> > 2. How can I get ref to self passed to doit() if I want it to? This:
> >         abob.doit(abob)
>
> py> import new
> py> class carol(object):
> ...    def __init__(self, **kwargs):
> ...        for name, method in kwargs.items():
> ...            setattr(self, name,
> ...                    new.instancemethod(method, self, carol))
>
> This should behave as you prefer.
>
>
> --Scott David Daniels
> Scott.Daniels at Acm.Org

-- 
James Stroud
UCLA-DOE Institute for Genomics and Proteomics
Box 951570
Los Angeles, CA 90095

http://www.jamesstroud.com/