def __init__(self,
                 seeds=None,
                 replica_set_name=None,
                 pool_class=None,
                 pool_options=None,
                 monitor_class=None,
                 condition_class=None,
                 local_threshold_ms=LOCAL_THRESHOLD_MS,
                 server_selection_timeout=SERVER_SELECTION_TIMEOUT,
                 heartbeat_frequency=common.HEARTBEAT_FREQUENCY,
                 server_selector=None,
                 fqdn=None):
        """Represent MongoClient's configuration.

        Take a list of (host, port) pairs and optional replica set name.
        """
        if heartbeat_frequency < common.MIN_HEARTBEAT_INTERVAL:
            raise ConfigurationError(
                "heartbeatFrequencyMS cannot be less than %d" % (
                    common.MIN_HEARTBEAT_INTERVAL * 1000,))

        self._seeds = seeds or [('localhost', 27017)]
        self._replica_set_name = replica_set_name
        self._pool_class = pool_class or pool.Pool
        self._pool_options = pool_options or PoolOptions()
        self._monitor_class = monitor_class or monitor.Monitor
        self._condition_class = condition_class or threading.Condition
        self._local_threshold_ms = local_threshold_ms
        self._server_selection_timeout = server_selection_timeout
        self._server_selector = server_selector
        self._fqdn = fqdn
        self._heartbeat_frequency = heartbeat_frequency
        self._direct = (len(self._seeds) == 1 and not replica_set_name)
        self._topology_id = ObjectId()
Represent MongoClient's configuration.

        Take a list of (host, port) pairs and optional replica set name.
        
stackoverflow/venv/lib/python3.6/site-packages/pymongo/settings.py