code: def bind_unix_socket(file_, mode=0o600, backlog=_DEFAULT_BACKLOG):
      
      sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
      sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
      sock.setblocking(0)
      try:
          st = os.stat(file_)
      except OSError as err:
          if err.errno != errno.ENOENT:
              raise
      else:
          if stat.S_ISSOCK(st.st_mode):
              os.remove(file_)
          else:
              raise ValueError('File %s exists and is not a socket', file_)
      sock.bind(file_)
      os.chmod(file_, mode)
      sock.listen(backlog)
      return sock
docs: Creates a listening unix socket.
  
      If a socket with the given name already exists, it will be deleted.
      If any other file with that name exists, an exception will be
      raised.
  
      Returns a socket object (not a list of socket objects like
      `bind_sockets`)