pycodec2.cpython-39-x86_64-linux-gnu.so: undefined symbol: codec2_bytes_per_frame

[manuel-masiello]

Hello. Thank you for your work. Unfortunately I can't use the library.

Here is an error that I cannot resolve.
This is how I produced the error:

$ conda create -n Test -c conda-forge tensorflow-gpu pip jupyterlab python
$ conda activate Test
$ pip install pycodec2
$ python

>>> import pycodec2            
                                                                                                                                                                                                 
Traceback (most recent call last):                                                                                                                                                                                                          
  File "<stdin>", line 1, in <module>                                                                                                                                                                                                       
  File "/home/manuel/anaconda3/envs/Test/lib/python3.11/site-packages/pycodec2/__init__.py", line 1, in <module>                                                                                                                            
    from .pycodec2 import *                                                                                                                                                                                                                 
ImportError: /home/manuel/anaconda3/envs/Test/lib/python3.11/site-packages/pycodec2/pycodec2.cpython-311-x86_64-linux-gnu.so: undefined symbol: codec2_bytes_per_frame

[manuel-masiello]

I think there is an error in the latest version of the package because it works with the previous one:

pip install pycodec2==2.1.0

[manuel-masiello]

Actually, you don't need Conda to get the error. Here is a very simple example in Google Colab:

Google colab link with the issue

[gregorias]

Thank you for raising the issue.

Could you check the compatibility chart with your codec2 version (https://github.com/gregorias/pycodec2#codec-2-compatibility)? You might be using an older version of codec2, which is incompatible with the newest release.

[gregorias]

Closing as abandoned. Let me know if you find that compatibility wasn't the issue. It's fine to use 2.1.0 BTW, new Pycodec2 versions only change what Codec2 version they use.

[x4dr]

have the same issue, steps to reproduce in a fresh venv:
install pycodec2, [check codec2 version], import codec2

[maric/tmp] % python -m virtualenv venv
created virtual environment CPython3.11.6.final.0-64 in 123ms
  creator CPython3Posix(dest=/home/maric/tmp/venv, clear=False, no_vcs_ignore=False, global=False)
  seeder FromAppData(download=False, pip=bundle, setuptools=bundle, wheel=bundle, via=copy, app_data_dir=/home/maric/.local/share/virtualenv)
    added seed packages: pip==23.2.1, setuptools==68.2.2, wheel==0.41.2
  activators BashActivator,CShellActivator,FishActivator,NushellActivator,PowerShellActivator,PythonActivator
[maric/tmp] % cd venv 
[tmp/venv] % . ./bin/activate
(venv) [tmp/venv] % pip install pycodec2
Collecting pycodec2
  Obtaining dependency information for pycodec2 from https://files.pythonhosted.org/packages/04/49/75a8c9c1bca0cca5c226d42019f81d57e3acb74949f56585c0f706457655/pycodec2-3.0.0-cp311-cp311-manylinux_2_17_x86_64.manylinux2014_x86_64.whl.metadata
  Downloading pycodec2-3.0.0-cp311-cp311-manylinux_2_17_x86_64.manylinux2014_x86_64.whl.metadata (3.0 kB)
Collecting numpy>=1.22 (from pycodec2)
  Obtaining dependency information for numpy>=1.22 from https://files.pythonhosted.org/packages/b6/ab/5b893944b1602a366893559bfb227fdfb3ad7c7629b2a80d039bb5924367/numpy-1.26.2-cp311-cp311-manylinux_2_17_x86_64.manylinux2014_x86_64.whl.metadata
  Downloading numpy-1.26.2-cp311-cp311-manylinux_2_17_x86_64.manylinux2014_x86_64.whl.metadata (61 kB)
     ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 61.2/61.2 kB 2.1 MB/s eta 0:00:00
Downloading pycodec2-3.0.0-cp311-cp311-manylinux_2_17_x86_64.manylinux2014_x86_64.whl (646 kB)
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 646.4/646.4 kB 3.5 MB/s eta 0:00:00
Downloading numpy-1.26.2-cp311-cp311-manylinux_2_17_x86_64.manylinux2014_x86_64.whl (18.2 MB)
   ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 18.2/18.2 MB 4.4 MB/s eta 0:00:00
Installing collected packages: numpy, pycodec2
Successfully installed numpy-1.26.2 pycodec2-3.0.0

[notice] A new release of pip is available: 23.2.1 -> 23.3.2
[notice] To update, run: pip install --upgrade pip
(venv) [tmp/venv] % pacman -Q codec2
codec2 1:1.2.0-1
(venv) ?1[tmp/venv] % echo 'import pycodec2' | python

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/maric/tmp/venv/lib/python3.11/site-packages/pycodec2/__init__.py", line 1, in <module>
    from .pycodec2 import *
ImportError: /home/maric/tmp/venv/lib/python3.11/site-packages/pycodec2/pycodec2.cpython-311-x86_64-linux-gnu.so: undefined symbol: codec2_bytes_per_frame
(venv) ?1[tmp/venv] % 

Feature request: probing for codec2 version and a better error message depending on whats broken/missing
i assume that installing with pip means no setup.py is necessary?

[gregorias]

I investigated the wheel in question. It's faulty. It contains an old codec2 shared object. I intend to fix the distribution soon, which should resolve your immediate issue.

Regarding messaging, there's not much I can do. Those errors are from the linking process over which I have no real control. Best approach is to educate future users on what that means and how to debug.

[gregorias]

I've released a fixed 3.0.1 version on PyPI. It should work now. PTAL