Can't import Optim.lr_scheduler

1

Hi. I’m KyeongJun

My question is simple.
When I’m trying to import learning rate scheduler,

from torch.optim.lr_scheduler import LambdaLR (or StepLR etc.)

it works well.

import torch.optim.lr_scheduler.LambdaLR (or StepLR etc.)

but this.

What’s wrong with the second code?
I’m using torch version 3.13.0+cu117.

Thank you.