Reference to self not passed to member function

[Scott David Daniels]

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