def METHOD_NAME(*x,**opt):
    """ print on the master, do nothing on the nodes """
    try :
        if opt['Verbosity_Level'] >  Verbosity_Level_Report_Max : return
    except :
        pass
    if All_Nodes_report and rank!=0 :
          for y in x:
              open('report_node%s'%rank,'a').write(str(y) + '\n') #             print y
    if rank==0 :
        myprint,myflush = (myprint_err,sys.stderr.flush)  if 'stderr' in opt and opt['stderr'] else (myprint_out,sys.stdout.flush)
        for y in x:
          myprint( y)  # open('report','a').write(str(y) + '\n') #             print y
          myflush() # be sure to flush the buffer!