代码

from torch.utils.tensorboard import SummaryWriter

for line in range(10):
    tb = SummaryWriter('./runs/lines/' + str(line))
    for step in range(10):
        value = step + line
        tb.add_scalar('value of lines', value, step)
    tb.close()

结果

注意事项

SummaryWriter类可以打开新的文件，也可以用来修改已经存在的文件