Cannot import SPECTObjectMeta and SPECTProjMeta from pytomography.metadata

General
1

Hi, I am having trouble importing SPECTObjectMeta and SPECTProjMeta from pytomography.metadata, e.g., in the following notebook:

https://pytomography.readthedocs.io/en/latest/notebooks/t_fbp.html

I am getting the following error:

ImportError: cannot import name ‘SPECTObjectMeta’ from ‘pytomography.metadata’ (c:\ProgramData\anaconda3\envs\pytomography_env\Lib\site-packages\pytomography\metadata_init_.py)

Any idea what might be the problem?

Thanks,
Jonathan