Cannot import torchtext (libtorchtext.so: undefined symbol)

1

After installing torchext, I get the following error when trying to import anything from it

OSError: <path>/anaconda3/envs/py311/lib/python3.11/site-packages/torchtext/lib/libtorchtext.so: undefined symbol: _ZN5torch3jit17parseSchemaOrNameERKSs

According this this report, it could be a compatibility issues. So have check the requirements here, which seem to match my installation when checking with conda list:

...
pytorch                   2.3.0           py3.11_cuda11.8_cudnn8.7.0_0    pytorch
...
torchtext                 0.18.0                    py311    pytorch
...

Not sure how to approach this issue further. Everything I found online was referring to problems due to mismatching versions.

1 Like
2

Yes, these issues are indeed usually caused by mismatched versions. Just to confirm before I try to reproduce it: are you seeing this error while simply importing torchtext?

2 Likes
3

I’ve just checked again, and now it seems working. So odd, I still have the screenshot from the error and I didn’t change anything after that. Not sure where I misses something, maybe I did not restart the kernel in Jupyter appropriately.

In any case, now I get the warning

Torchtext is deprecated and the last released version will be 0.18 (this one)

so there’s no use to stick with it anymore. Probably old news, but I rarely find some time to code anything myself, so I’ve never noticed.

4

I have same issue

versions;
torch==2.7.0.dev20250217+cu126
torchtext==0.18.0

>>> import torch
>>> import torchtext
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/web3-2/workspace/DeLAP/demo/pytorch/finetuning/llama3.2/.venv/lib/python3.10/site-packages/torchtext/__init__.py", line 18, in <module>
    from torchtext import _extension  # noqa: F401
  File "/home/web3-2/workspace/DeLAP/demo/pytorch/finetuning/llama3.2/.venv/lib/python3.10/site-packages/torchtext/_extension.py", line 64, in <module>
    _init_extension()
  File "/home/web3-2/workspace/DeLAP/demo/pytorch/finetuning/llama3.2/.venv/lib/python3.10/site-packages/torchtext/_extension.py", line 58, in _init_extension
    _load_lib("libtorchtext")
  File "/home/web3-2/workspace/DeLAP/demo/pytorch/finetuning/llama3.2/.venv/lib/python3.10/site-packages/torchtext/_extension.py", line 50, in _load_lib
    torch.ops.load_library(path)
  File "/home/web3-2/workspace/DeLAP/demo/pytorch/finetuning/llama3.2/.venv/lib/python3.10/site-packages/torch/_ops.py", line 1390, in load_library
    ctypes.CDLL(path)
  File "/usr/lib/python3.10/ctypes/__init__.py", line 374, in __init__
    self._handle = _dlopen(self._name, mode)
OSError: /home/web3-2/workspace/DeLAP/demo/pytorch/finetuning/llama3.2/.venv/lib/python3.10/site-packages/torchtext/lib/libtorchtext.so: undefined symbol: _ZN5torch6detail10class_baseC2ERKSsS3_SsRKSt9type_infoS6_