In Python, how can you get the name of a member function's class?

Question

I have a function that takes another function as a parameter. If the function is a member of a class, I need to find the name of that class. E.g.

def analyse         


        

Answer 1

I'm not a Python expert, but does this work?

testFunc.__self__.__class__

It seems to work for bound methods, but in your case, you may be using an unbound method, in which case this may work better:

testFunc.__objclass__

Here's the test I used:

Python 2.5.2 (r252:60911, Jul 31 2008, 17:31:22) 
[GCC 4.2.3 (Ubuntu 4.2.3-2ubuntu7)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import hashlib
>>> hd = hashlib.md5().hexdigest
>>> hd

>>> hd.__self__.__class__

>>> hd2 = hd.__self__.__class__.hexdigest
>>> hd2

>>> hd2.__objclass__

Oh yes, another thing:

>>> hd.im_class
Traceback (most recent call last):
  File "", line 1, in 
AttributeError: 'builtin_function_or_method' object has no attribute 'im_class'
>>> hd2.im_class
Traceback (most recent call last):
  File "", line 1, in 
AttributeError: 'method_descriptor' object has no attribute 'im_class'

So if you want something bulletproof, it should handle __objclass__ and __self__ too. But your mileage may vary.