the encoding passed into the exception for unsubscribe should be self.encoding.

Name Error:

/Users/iqc/Development/virtualenvs/people/lib/python2.6/site-packages/django_mailman/models.pyc in unsubscribe(self, email)
    181 if (msg not in UNSUBSCRIBE_MSG) and (msg not in NON_MEMBER_MSG):
    182 error = u'%s: %s' % (msg, member)
--> 183 raise Exception(error.encode(encoding))
    184
    185 def get_all_members(self):

NameError: global name 'encoding' is not defined
                                                get_all_members()