def __init__(self, localaddr=None, remoteaddr=None, 
                 timeout=60, data_size_limit=10240000, **kwargs):
        """Initialize SMTP Server

        :param localaddr: tuple pair that start server, like `('127.0.0.1', 25)`
        :param remoteaddr: ip address (string or list) that can relay on this server
        :param timeout: int that connection Timeout
        :param data_size_limit: max byte per mail data
        :param kwargs: other key-arguments will pass to :class:`.SSLSettings`
        """

        self.relay = bool(remoteaddr)
        self.remoteaddr = remoteaddr
        
        self.localaddr = localaddr

        if not self.localaddr:
            self.localaddr = ('127.0.0.1', 25)
        
        self.ssl = None
        
        self.timeout = int(timeout)

        self.data_size_limit = int(data_size_limit)

        if kwargs in 'keyfile':
            self.ssl = SSLSettings(**kwargs)

        super(SMTPServer, self).__init__(self.localaddr, self.handle)
dataset/ETHPy150Open 34nm/gsmtpd/gsmtpd/server.py/SMTPServer.__init__/swapped operands of `in`