#!/usr/local/bin/python2
from copy import deepcopy

class C(object):
  def __init__(self):
    self.a = []

  def p(self):
    print self.a

c = C()
c.a = C()
c.a.a = C()
p = deepcopy(c.a.a.p)
c.a.a.p()
p()
c.a.a.a.append(2)
c.a.a.p()
p()