Consider: ### Function closure example
def outer(s): ... def inner(): ... print s ... return inner ... >>> f = outer(5) >>> f() 5 >>> dir(f) ['__call__', '__class__', '__delattr__', '__dict__', '__doc__', '__get__', '__getattribute__', '__hash__', '__init__', '__module__', '__name__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__str__', 'func_closure', 'func_code', 'func_defaults', 'func_dict', 'func_doc', 'func_globals', 'func_name'] ### Class instance closure example >>> def outer2(s): ... class Inner(object): ... def __call__(self): ... print s ... return Inner() ... >>> f = outer2(10) >>> f() 10 >>> dir(f) ['__call__', '__class__', '__delattr__', '__dict__', '__doc__', '__getattribute__', '__hash__', '__init__', '__module__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__str__', '__weakref__'] ##### Class closure example >>> def outer3(s): ... class Inner(object): ... def __call__(self): ... print s ... return Inner ... >>> F = outer3(15) >>> f = F() >>> f() 15 >>> dir(F) ['__call__', '__class__', '__delattr__', '__dict__', '__doc__', '__getattribute__', '__hash__', '__init__', '__module__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__str__', '__weakref__'] Now the closure for the function live in func_name. I've even done the exercise where I build a dummy inner function that returns its closed variable, so that I can use that thing to reach through "cells" and check out the variables living in the closure object. Where are the closure variables for the class instance, and the class? Can I get my hands on them in Python? -Gerard -- http://mail.python.org/mailman/listinfo/python-list
