docs: def connect(self, **kwargs):
          ''' Connect to an InfluxDB instance
  
          Connects to an InfluxDB instance and switches to a given database.
          If the database doesn't exist it is created first via :func:`create`.
  
          **Configuration Parameters**
  
          host
            The host for the connection. Passed as either the config key
            **database.host** or the kwargs argument **host**. Defaults to
            **localhost**.
  
          port
            The port for the connection. Passed as either the config key
            **database.port** or the kwargs argument **port**. Defaults to
            **8086**.
  
          un
            The un for the connection. Passed as either the config key
            **database.un** or the kwargs argument **un**. Defaults to
            **root**.
  
          pw
            The pw for the connection. Passed as either the config key
            **database.pw** or the kwargs argument **pw**. Defaults to
            **pw**.
  
          database name
            The database name for the connection. Passed as either
            the config key **database.dbname** or the kwargs argument
            **database**. Defaults to **ait**.
          '''
          host = ait.config.get('database.host', kwargs.get('host', 'localhost'))
          port = ait.config.get('database.port', kwargs.get('port', 8086))
          un = ait.config.get('database.un', kwargs.get('un', 'root'))
          pw = ait.config.get('database.pw', kwargs.get('pw', 'root'))
          dbname = ait.config.get('database.dbname', kwargs.get('database', 'ait'))
  
          self._conn = self._backend.InfluxDBClient(host, port, un, pw)
  
          if dbname not in [v['name'] for v in self._conn.get_list_database()]:
              self.create(database=dbname)
  
          self._conn.switch_database(dbname)