what.py

dufft

>>> class ca11able(object):
	def __init__(self):
		a = 2
	def __call__(self):
		a += 1

		
>>> c = ca11able
>>> c()
<__main__.ca11able object at 0x0000000002C949E8>
>>> c = ca11able()
>>> c.a

Traceback (most recent call last):
  File "<pyshell#80>", line 1, in <module>
    c.a
AttributeError: 'ca11able' object has no attribute 'a'