code: def add_single(self, hostname, ports, nickname=None, **kws):
          '''
              Explicitly add a single entry.
              Hostname is a FQDN and ports is either a single int (assumed to be TCP port)
              or Electrum protocol/port number specification with spaces in between.
          '''
          nickname = nickname or hostname
  
          self[hostname.lower()] = ServerInfo(nickname, hostname, ports, **kwsf add_single(self, hostname, ports, nickname=None, **kws):
          '''
              Explicitly add a single entry.
              Hostname is a FQDN and ports is either a single int (assumed to be TCP port)
              or Electrum protocol/port number specification with spaces in between.
          '''
          nickname = nickname or hostname
  
          self[hostname.lower()] = ServerInfo(nickname, hostname, ports, **kws)
docs: Explicitly add a single entry.
              Hostname is a FQDN and ports is either a single int (assumed to be TCP port)
              or Electrum protocol/port number specification with spaces in between.