human
I wrote the below code

    procs = len(functions)
    if (procs > comm.size):
        pytest.skip(('requires    at    least    %d    MPI    processes' % procs))
    comm.Barrier()
    include = (comm.rank < len(functions))
    subcomm = comm.Split(include)
    class subcomm_barrier(object, ):
        'Stand-in    for    multiproc    barrier    for    MPI-parallel    jobs.'
        def wait(self):
            subcomm.Barrier()
    if include:
        try:
            functions[subcomm.rank](subcomm_barrier())
        except:
            traceback.print_exc()
            comm.Abort()
    subcomm.Free()
    comm.Barrier()

What's a good function header?

Here's a good function header?
assistant
#Here's a good function header.

def mpi_multiproc_test(*functions):