gistfile1.txt

>>> def __one__(self):
...     pass
...
>>> class Foo:
...     __two__ = __one__
...     def __three__(self):
...         pass
...
>>> Foo.__four__ = __one__
>>> obj = Foo()
>>> obj.__five__ = __one__
>>> type(__one__)
<class 'function'>
>>> type(Foo.__two__)
<class 'function'>
>>> type(Foo.__three__)
<class 'function'>
>>> type(Foo.__four__)
<class 'function'>
>>> type(obj.__two__)
<class 'method'>
>>> type(obj.__three__)
<class 'method'>
>>> type(obj.__four__)
<class 'method'>
>>> type(obj.__five__)
<class 'function'>