python class attribute as method args?

>>> class test1:
...     def __init__(self):
...             self.logfile = '/var/log/httpd/access_log'
...     def func(self, logfile=self.logfile):
...             print logfile
...
Traceback (most recent call last):
  File "", line 1, in ?
  File "", line 4, in test1
NameError: name 'self' is not defined