[Bug] penvino/inference_engine/__init__.py", line 30, in <module> from .ie_api import * ImportError: libpython3.8.so.1.0: cannot open shared object file: No such file or directory

[lucasjinreal]

penvino/inference_engine/init.py", line 30, in
from .ie_api import *
ImportError: libpython3.8.so.1.0: cannot open shared object file: No such file or directory

[alalek]

Please provide more information:

• how did you get OpenVINO? which version?
• python3 --version
• python3 -c "import sys; print(sys.path)"
• LD_DEBUG=libs python3 -c "from .ie_api import *" (attach output as .txt file)
• ldd <path_to_ie_api.so>

[lucasjinreal]

@alalek I just install openvino from pip install openvino. can not import it.

[Iffa-Intel]

Hi @jinfagang ,

The libpython3.8.so file might not exist in your system, hence causing the error.
Please help to share all information requested by @alalek.
This would help us to narrow down the cause of the issue.

[dkurt]

Have you installed libpython3.8-dev? Which OS is used?

[lucasjinreal]

@dkurt @Iffa-Meah hi, I will update my os env and detailed output once get home. am using ubuntu 20.04, I think I have libpython3.8-dev installed.

[lucasjinreal]

@dkurt Sorry for late reply. I just double check:

locate libpython3.8.so.1.0                                                                          bm/
/snap/gnome-3-38-2004/76/usr/lib/x86_64-linux-gnu/libpython3.8.so.1.0
/snap/gnome-3-38-2004/87/usr/lib/x86_64-linux-gnu/libpython3.8.so.1.0
/snap/ogre-meshviewer/494/usr/lib/x86_64-linux-gnu/libpython3.8.so.1.0

Seems my system version is:

Python 3.8.5 (default, Sep  4 2020, 07:30:14) 

So I maybe don't have this .so? How should I install it?

BTW, why does users have install this specific version of libpython3.8.s0.1.0? For users like me python3.8.5 not work? then what about python3.9? and python3.8.4? I am confused here.

[lucasjinreal]

@dkurt Oh, sorry. I just checked am using anaconda, and seems libpython3.8.so.1.0 actually exist already:

ls ~/anaconda3/lib/ | grep python                                                               130 bm/
libpython3.8.a
libpython3.8.nolto.a
libpython3.8.so
libpython3.8.so.1.0
libpython3.so
python3.8

why it doesn't found it?

Now, this is confusing:

[Iffa-Intel]

@jinfagang

If you intend to use the Python Package from Anaconda, it is recommended to create a virtual environment using anaconda. Activate the venv, make sure all OpenVINO pre-requisite installed, then pip install openvino. This should direct the Python Package from Anaconda to be used with OpenVINO.

The proper steps would be:

1. Create venv: conda create --name py37 python=3.7
2. Activate the venv: conda activate py37
3. Update Anaconda: conda update --all
4. Install numpy: conda install numpy
5. Install OpenVINO (install according to your ubuntu version): conda install openvino-ie4py-ubuntu20 -c intel
6. Verify: python -c "from openvino.inference_engine import IECore"

You may refer here.

[lucasjinreal]

@Iffa-Meah thanks a ton. I will try it later on.

BTW, why using base env and pip install openvino doesn't work here? As you can see, I am using base env which is also an venv in conda.

[Iffa-Intel]

@jinfagang, it is not recommended to put any program in the base environment which is also emphasized by the official Anaconda guide. In order to know further, you probably need to find out from Anaconda itself. Probably it's related to how they manage the packages.

This issue can be solved by building the Python API wrapper and specifying an exact Python version, only if you build from source: Build on Linux Systems

In your case, it is recommended to create a virtual environment in Anaconda and install OpenVINO there. This would guarantee the usability of OpenVINO and the Python packages.

[lucasjinreal]

@Iffa-Meah thanks, I though openvino doesn't opensource all code before. does openvino opensourced just like tensorrt? Only opensource OSS but not core lib?

[Iffa-Intel]

@jinfagang , for building from source, you'll need to do the setup as in the link I provided above.
Once the setup is successful, you can clone the Open Model Zoo repository and get the pre-trained models/sample app.
Here is the repo: Open_Model_Zoo.

[Iffa-Intel]

Closing issue, feel free to re-open or start a new issue if additional assistance is needed.

[AlexHex7]

@jinfagang Hi, you should install libpython3.8 in your ubuntu system.

sudo apt-get install libpython3.8