Python-сообщество

 class MyHandler(logging.handlers.SMTPHandler):
    def __init__(self, mailhost, fromaddr, toaddrs, subject,
                 credentials=None, secure=None, timeout=5.0):
        logging.handlers.SMTPHandler.__init__(self, mailhost, fromaddr, toaddrs, subject,
                         credentials=None, secure=None, timeout=5.0)

 def __init__(self, *args, **kwargs):
     if len(args) != 5:
         raise TypeError('MyHandler constructor takes 5 positional arguments but %s were given' % len(args))
     else:
         self.file = args[-1]  # теперь в других методах MyHandler можно сослаться на file как на self.file
         new_args = args[:-1]
         super().__init__(*new_args, **kwargs)