How to use the rss2email.LOG.error function in rss2email

def log(self):
        super(SMTPConnectionError, self).log()
        _LOG.warning(
            'check your config file to confirm that smtp-server and other '
            'mail server settings are configured properly')
        if hasattr(self.__cause__, 'reason'):
            _LOG.error('reason: {}'.format(self.__cause__.reason))

else:
            _LOG.debug('unrecognized version: {}'.format(self))
            warned = True

        exc = parsed.get('bozo_exception', None)
        if isinstance(exc, _socket.timeout):
            _LOG.error('timed out: {}'.format(self))
            warned = True
        elif isinstance(exc, OSError):
            _LOG.error('{}: {}'.format(exc, self))
            warned = True
        elif isinstance(exc, _SOCKET_ERRORS):
            _LOG.error('{}: {}'.format(exc, self))
            warned = True
        elif isinstance(exc, _feedparser.zlib.error):
            _LOG.error('broken compression: {}'.format(self))
            warned = True
        elif isinstance(exc, (IOError, AttributeError)):
            _LOG.error('{}: {}'.format(exc, self))
            warned = True
        elif isinstance(exc, KeyboardInterrupt):
            raise exc
        elif isinstance(exc, _sax.SAXParseException):
            _LOG.error('sax parsing error: {}: {}'.format(exc, self))
            warned = True
        elif (parsed.bozo and
              isinstance(exc, _feedparser.CharacterEncodingOverride)):
            _LOG.warning(
                'incorrectly declared encoding: {}: {}'.format(exc, self))
            warned = True
        elif (parsed.bozo and isinstance(exc, _feedparser.NonXMLContentType)):
            _LOG.warning('non XML Content-Type: {}: {}'.format(exc, self))

version = parsed.get('version', None)
        if version:
            _LOG.debug('feed version {}'.format(version))
        else:
            _LOG.debug('unrecognized version: {}'.format(self))
            warned = True

        exc = parsed.get('bozo_exception', None)
        if isinstance(exc, _socket.timeout):
            _LOG.error('timed out: {}'.format(self))
            warned = True
        elif isinstance(exc, OSError):
            _LOG.error('{}: {}'.format(exc, self))
            warned = True
        elif isinstance(exc, _SOCKET_ERRORS):
            _LOG.error('{}: {}'.format(exc, self))
            warned = True
        elif isinstance(exc, _feedparser.zlib.error):
            _LOG.error('broken compression: {}'.format(self))
            warned = True
        elif isinstance(exc, (IOError, AttributeError)):
            _LOG.error('{}: {}'.format(exc, self))
            warned = True
        elif isinstance(exc, KeyboardInterrupt):
            raise exc
        elif isinstance(exc, _sax.SAXParseException):
            _LOG.error('sax parsing error: {}: {}'.format(exc, self))
            warned = True
        elif (parsed.bozo and
              isinstance(exc, _feedparser.CharacterEncodingOverride)):
            _LOG.warning(
                'incorrectly declared encoding: {}: {}'.format(exc, self))

def log(self):
        super(IMAPConnectionError, self).log()
        _LOG.warning(
            'check your config file to confirm that imap-server and other '
            'mail server settings are configured properly')
        if hasattr(self.__cause__, 'reason'):
            _LOG.error('reason: {}'.format(self.__cause__.reason))

def log(self):
        _LOG.error(str(self))
        if self.__cause__ is not None:
            _LOG.error('cause: {}'.format(self.__cause__))