NameError: name '_C' is not defined while importing torch

1

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. 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?

2

Are you able to cd into an empty directory and import torch there? If so, I guess some scripts in your current wdir might be using “common” names and could thus interact with Python or PyTorch internals.

3

@ptrblck

my current working directory is:
/user/rahul/MyApp/examples

I created a notebook in this path and just doing import torch in the notebook. Then, I get the above mentioned error. The directory: /user/rahul/MyApp/examples has no files except the notebook that I created. This error happens only when I change torch version from 1.4.0 to 1.9.0.

4

I cannot reproduce it with a similar folder structure and the 1.9.0 binaries:

# ~/MyApp/examples$ cat tmp.py 
import torch

print(torch.__version__)

# ~/MyApp/examples$ python tmp.py 
1.9.0
5

This happened to me a while back. Restarting runtime solved it for me

6

This error still happening on google colab.

7 
!pip install -q Cython torch

Everyone, Install the Cython first!!!