class - How to find instance of a bound method in Python?

Question

>>> class A(object):  
...         def some(self):  
...                 pass  
...  
>>> a=A()  
>>> a.some  
<bound method A.some of <__main__.A object at 0x7f0d6fb9c090>>

IOW, I need to get access to "a" after being handed over only "a.some".

Answer 1

Starting python 2.6 you can use special attribute __self__:

>>> a.some.__self__ is a
True

im_self is phased out in py3k.

For details, see the inspect module in the Python Standard Library.