LexerNoViableAltException: 2020 & import ddpm error

[ytwas]

thanks for sharing this awesome work! But I cannot run the code, due to some errors.
when I use the provided command to train vqgan:
PL_TORCH_DISTRIBUTED_BACKEND=gloo python train/train_vqgan.py dataset=brats dataset.root_dir=../data/BraTS/BraTS 2020 model=vq_gan_3d model.gpus=1 model.default_root_dir_postfix='flair' model.precision=16 model.embedding_dim=8 model.n_hiddens=16 model.num_workers=32 model.gradient_clip_val=1.0 model.lr=3e-4 model.discriminator_iter_start=10000 model.perceptual_weight=4 model.image_gan_weight=1 model.video_gan_weight=1 model.gan_feat_weight=4 model.batch_size=2 model.n_codes=16384 model.accumulate_grad_batches=1

The error information:

Traceback (most recent call last):
File "train/train_vqgan.py", line 8, in
from ddpm.diffusion import default
ModuleNotFoundError: No module named 'ddpm'

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Then I try to use export PYTHONPATH=$PYTHONPATH:~/gitcode/medicaldiffusion/ddpm to fix it,
but a new error come up:

LexerNoViableAltException: 2020
^
See https://hydra.cc/docs/next/advanced/override_grammar/basic for details
Set the environment variable HYDRA_FULL_ERROR=1 for a complete stack trace.

---

Thanks in advance!

[ytwas]

I fix the problem, the terminal misunderstand the path../data/BraTS/BraTS 2020 ,
I change it to '../data/BraTS/BraTS_2020`

[sulaimanvesal]

hi, the problem still exist. I cloned the recent code and yet saying no ddpm.

[lihao9056]

我解决了问题，终端误解了路径../data/BraTS/BraTS 2020 ,我把它改成../data/BraTS/BraTS_2020 '

thanks you for sharing your experience.Could you share your data directory.I would be very thankful.

[ytwas]

thanks you for sharing your experience.Could you share your data directory.I would be very thankful.

我把数据放到了和克隆的代码“medicaldiffusion”这个文件夹同一级的目录下， 目录就像我用的参数一样，只是BraTS 2020没法在终端里使用，因为空格会被识别成分隔下一个参数，所以把空格替换成了下划线

[ytwas]

hi, the problem still exist. I cloned the recent code and yet saying no ddpm.

I failed to run the code, either. Maybe you can try the command export PYTHONPATH=$PYTHONPATH:<PATH TO ddpm> in terminal, and then run the trainning
I still have other problem about 'hydra' library

[lihao9056]

thank you very much for your reply.

[Zhongrocky]

thanks you for sharing your experience.Could you share your data directory.I would be very thankful.

我把数据放到了和克隆的代码“medicaldiffusion”这个文件夹同一级的目录下， 目录就像我用的参数一样，只是BraTS 2020没法在终端里使用，因为空格会被识别成分隔下一个参数，所以把空格替换成了下划线

@ytwas 您好，请问您复现了这个代码了么？我在实现这个代码加载数据集的时候，每次都会报错，说数据集不可用。可以确定的是我的数据集名字是没有空格的。

[yunfei920406]

I have experienced the same problem. Can you help me?