I’m getting below error while importing torch version 1.9.0
---> 22 import torch
     23 from tqdm import tqdm
     24 from attrdict import AttrDict

/python/PROJ/torch/1.9.0-py37/exec/lib/torch/__init__.py in <module>()
    227 
    228 
--> 229 __all__ += [name for name in dir(_C)
    230             if name[0] != '_' and
    231             not name.endswith('Base')]

NameError: name '_C' is not defined


Note: imported Cython 0.29.21 version as I see here 4. But no luck.
I verified that my current working directory is project home, and not torch directory.
Can anyone tell me whats going  wrong here?