analogdevicesinc/gr-iio

ModuleNotFoundError: No module named '_iio_swig'

paulgrahek opened this issue · 2 comments

paulgrahek commented

Running on Pop! OS 19.10
Using GNU Radio 3.8.0.0 from the GNU Radio PPA.

Using the upgrade-3.8 branch, setup steps as follows worked correctly:

git clone https://github.com/analogdevicesinc/gr-iio.git
cd gr-iio
cmake .
make 
sudo make install
cd ..
sudo ldconfig

However, when running a flow graph with a Pluto source block, the following error(s) occurs:

Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/iio/iio_swig.py", line 14, in swig_import_helper
    return importlib.import_module(mname)
  File "/usr/lib/python3.7/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
  File "<frozen importlib._bootstrap>", line 983, in _find_and_load
  File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 670, in _load_unlocked
  File "<frozen importlib._bootstrap>", line 583, in module_from_spec
  File "<frozen importlib._bootstrap_external>", line 1043, in create_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
ImportError: dynamic module does not define module export function (PyInit__iio_swig)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/iio/__init__.py", line 30, in <module>
    from .iio_swig import *
  File "/usr/lib/python3/dist-packages/iio/iio_swig.py", line 17, in <module>
    _iio_swig = swig_import_helper()
  File "/usr/lib/python3/dist-packages/iio/iio_swig.py", line 16, in swig_import_helper
    return importlib.import_module('_iio_swig')
  File "/usr/lib/python3.7/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
ModuleNotFoundError: No module named '_iio_swig'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/iio/iio_swig.py", line 14, in swig_import_helper
    return importlib.import_module(mname)
  File "/usr/lib/python3.7/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
  File "<frozen importlib._bootstrap>", line 983, in _find_and_load
  File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 670, in _load_unlocked
  File "<frozen importlib._bootstrap>", line 583, in module_from_spec
  File "<frozen importlib._bootstrap_external>", line 1043, in create_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
ImportError: dynamic module does not define module export function (PyInit__iio_swig)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/paulgrahek/Nextcloud/isu/EECPI/Lab 4/receiver_fm_2.py", line 38, in <module>
    import iio
  File "/usr/lib/python3/dist-packages/iio/__init__.py", line 36, in <module>
    from .iio_swig import *
  File "/usr/lib/python3/dist-packages/iio/iio_swig.py", line 17, in <module>
    _iio_swig = swig_import_helper()
  File "/usr/lib/python3/dist-packages/iio/iio_swig.py", line 16, in swig_import_helper
    return importlib.import_module('_iio_swig')
  File "/usr/lib/python3.7/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
ModuleNotFoundError: No module named '_iio_swig'

Unlike the other module import issues, this one appears to have some sort of dynamic module error but I'm not sure what the root cause is.

tfcollins commented

On my PopOS after the installation I simply added /usr/local/lib/python3/dist-packages to my PYTHONPATH and everything worked fine. What else did you do have running make install for the gr-iio blocks?

paulgrahek commented

Figured it out. My PYTHONPATH was set to /usr/lib/python3/dist-packages:/usr/local/lib/python3/dist-packages. Changing the order to /usr/local/lib/python3/dist-packages:/usr/lib/python3/dist-packages or setting it to only /usr/local/lib/python3/dist-packages resolves the issue.
Thank you @tfcollins!