anchor.diff:  
   -spec close_fifo(string(), port()) -> ok.
   close_fifo(FifoName, FifoPort) ->
  -    port_close(FifoPort),
  +    _ = (catch port_close(FifoPort)),
       _ = file:delete(FifoName),
       ok.
   
  
positive.code:             end,
              receive
                  {PythonPort, {exit_status, _Status}} ->
                      port_close(PythonPort),
                      ok
              end;
          {PythonPort, {data, {eol, Line}}} ->
  
negative.code:         {PythonPort, {data, {noeol, Line}}} ->
              wait_python_stop(PythonPort, Acc ++ Line)
      after 5000 ->
          _ = (catch port_close(PythonPort)),
          ok
      end.
  
  