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 analyser(testFunc):
    print testFunc.__name__, 'belongs to the class, ...

I thought

testFunc.__class__ 

would solve my problems, but that just tells me that testFunc is a function.

Answer 1

From python 3.3, .im_class is gone. You can use .__qualname__ instead. Here is the corresponding PEP: https://www.python.org/dev/peps/pep-3155/

class C:
    def f(): pass
    class D:
        def g(): pass

print(C.__qualname__) # 'C'
print(C.f.__qualname__) # 'C.f'
print(C.D.__qualname__) #'C.D'
print(C.D.g.__qualname__) #'C.D.g'

With nested functions:

def f():
    def g():
        pass
    return g

f.__qualname__  # 'f'
f().__qualname__  # 'f.<locals>.g'

Answer 2

testFunc.im_class

https://docs.python.org/reference/datamodel.html#the-standard-type-hierarchy

im_class is the class of im_self for bound methods or the class that asked for the method for unbound methods