code: def timestamp(num_params, p_levels, k_choices, N):
      
      string = "_v%s_l%s_gs%s_k%s_N%s_%s.txt" % (num_params,
                                                 p_levels,
                                                 k_choices,
                                                 N,
                                                 dt.strftime(dt.now(),
                                                             "%d%m%y%H%M%S"))
      return string
docs: Returns a uniform timestamp with parameter values for file identification