[Tutor] how to reference a function itself when accessing its private functions?

[spir]

Le Mon, 04 May 2009 16:08:38 -0700,
Emile van Sebille <emile at fenx.com> s'exprima ainsi:

> On 5/4/2009 3:37 PM Tim Michelsen said...
> > Dear Tutors and fellow pythonistas,
> > I would like to get access to the private methods of my function.
> > 
> > For instance:
> > Who can I reference the docstring of a function within the function
> > itself?
> <snip>
> > 
> > def show2(str):
> >     """prints str"""
> >     print str
> >     d = self.__doc__
> >     print d
> 
>  >>> def show2(str):
> ...     """prints str"""
> ...     print str
> ...     print globals()['show2'].__doc__
> ...
>  >>> show2('hello')
> hello
> prints str
>  >>>

Hello Emile,

Why don't you use the func name directly?
   print show2.__doc__
I mean it's a constant in the sense that it is know at design time, right? And you need it anyway, as shown by the fact that it becomes a string literal in the your version.

It's not like if you would _not_ know it ;-) Fortunately, funcs (and methods and classes and modules -- but not other object AFAIK) know their own (birth)name:

def docString(obj):
   name = obj.__name__
   return globals()[name].__doc__

Should work for the above listed object types. Anyway, other types have no docstring...

> This is the easy way -- ie, you know where to look and what name to use. 
>   You can discover the name using the inspect module, but it can get 
> ugly.  If you're interested start with...
> 
> from inspect import getframeinfo, currentframe



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