Python: Class member access enforcement (not encapsulation)

accessEncapsulation.py

# From Stack Overflow question:
# https://stackoverflow.com/questions/26216563/how-to-do-encapsulation-in-python
#
# Python has simple encapsulation, but it doesn't strictly enforce access to
# protected or private class members.  This is one person's attempt to
# address that in a (misleadingly named) class.
#
# Could this be done with introspection rather than using on `self.privates` and 
# `self.protected`? Follow the common Python style of naming variables `__a` and `_b`.
# Then the methods would check whether the names begin with `__` or `_` to allow or
# deny access.

import sys

class EncapsulationClass(object):

  def __init__(self):
    self.privates = ["__dict__", "privates", "protected", "a"]
    self.protected = ["b"]

    print self.privates

    self.a = 1
    self.b = 2
    self.c = 3
    pass

  def __getattribute__(self, name):
    if sys._getframe(1).f_code.co_argcount == 0:
      if name in self.privates:
        raise Exception("Access to private attribute \"%s\" is not allowed" % name)
      else:
        return object.__getattribute__(self, name)
    else:
      return object.__getattribute__(self, name)

  def __setattr__(self, name, value):
    if sys._getframe(1).f_code.co_argcount == 0:
      if name in self.privates:
        raise Exception("Setting private attribute \"%s\" is not allowed" % name)
      elif name in self.protected:
        raise Exception("Setting protected attribute \"%s\" is not allowed" % name)
      else:
        return object.__setattr__(self, name, value)
    else:
      return object.__setattr__(self, name, value)


example = EncapsulationClass()

example.a = 10 # Exception: Setting private attribute "a" is not allowed
example.b = 10 # Exception: Setting protected attribute "b" is not allowed
example.c = 10 # example.c == 10

example.__dict__["privates"] # Exception: Setting protected attribute "b" is not allowed