[Bug]: ImportError: cannot import name 'Core' from 'openvino' after model_zoo installation

[drimyus]

OpenVINO Version

2024.0.0

Operating System

Other (Please specify in description)

Device used for inference

CPU

Framework

None

Model used

No response

Issue description

ImportError: cannot import name 'Core' from 'openvino'

OS: ubuntu 22.04 openvino: 2024.0.0 installed using pypi pip3 install openvino~=2024.0.0 python: python3.10

I followed instruction document to install openvino(2024.0.0), but failed to import sub modules.

source venv/bin/activate

(venv) python -m pip install --upgrade pip
(venv) python -m pip install openvino~=2024.0.0

(venv) python -c "from openvino import Core; print(Core().available_devices)"

ImportError: cannot import name 'Core' from 'openvino' (/{venv_path}/lib/python3.10/site-packages/openvino/__init__.py)

Step-by-step reproduction

No response

Relevant log output

source venv/bin/activate

(venv) python -m pip install --upgrade pip
(venv) python -m pip install openvino~=2024.0.0

(venv) python -c "from openvino import Core; print(Core().available_devices)"

ImportError: cannot import name 'Core' from 'openvino' (/{venv_path}/lib/python3.10/site-packages/openvino/__init__.py)

Issue submission checklist

• [X] I'm reporting an issue. It's not a question.
• [X] I checked the problem with the documentation, FAQ, open issues, Stack Overflow, etc., and have not found a solution.
• [X] There is reproducer code and related data files such as images, videos, models, etc.

[ilya-lavrenov]

Could you please try:

python3 -c "import openvino; print(openvino.__version__)"

[p-wysocki]

Could you please make sure your PYTHONPATH environment variable doesn't point to anything that could be OpenVINO related? Which version of pip are you using?

[drimyus]

openvino version is 2024.0.0

pip3 list| grep openvino

openvino                 2024.0.0
openvino-dev             2024.0.0
openvino-telemetry       2023.2.1

pip3 version 24.0

pip3 --version

pip 24.0 from /{venv_path}/lib/python3.10/site-packages/pip (python 3.10)

[drimyus]

Could you please try:

python3 -c "import openvino; print(openvino.__version__)"

python3 -c "import openvino; print(openvino.__version__)"
Traceback (most recent call last):
  File "<string>", line 1, in <module>
AttributeError: module 'openvino' has no attribute '__version__'

But I can see openvino in pip3 list.

[ilya-lavrenov]

Could you please reinstall openvino? Looks like /{venv_path}/lib/python3.10/site-packages/openvino does not contain any file (or does not contain __init__.py at least)

[drimyus]

@ilya-lavrenov when I checked the openvino folder in venv, I can get this list like below

$ ls venv/lib/python3.10/site-packages/openvino
frontend  __init__.py  model_zoo                 preprocess  __pycache__                                  runtime  torch
helpers   libs         _offline_transformations  properties  _pyopenvino.cpython-310-x86_64-linux-gnu.so  tools    utils.py

[ilya-lavrenov]

Have you installed libpython3.10 ?

[drimyus]

Yes, I have installed python3.10

$ sudo apt install libpython3.10
[sudo] password for tk: 
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
libpython3.10 is already the newest version (3.10.12-1~22.04.3).
libpython3.10 set to manually installed.
0 upgraded, 0 newly installed, 0 to remove and 21 not upgraded.

[drimyus]

Let me update the Issue description

First I installed openvino==2024.0.0 in empty venv, it worked fine But when I tried to install (model_zoo api package)[https://github.com/openvinotoolkit/open_model_zoo/blob/master/demos/common/python/model_zoo/model_api/README.md#installing-python-model-api-package] in same venv, the issue occurred

ImportError: cannot import name 'Core' from 'openvino'

[Wovchena]

I can't reproduce the issue:

python3 -m venv venv
source ./venv/bin/activate
python -m pip install -U pip
python -m pip install openvino==2024.0.0
python -m pip install demos/common/python
python -c "from openvino import Core; print(Core().available_devices)"

I tried both 2024.0.0 (https://github.com/openvinotoolkit/open_model_zoo/commit/37f60eb7fe1dcdedc552b2fb184d646723ed5e80) and master (https://github.com/openvinotoolkit/open_model_zoo/commit/9c6d95a2a668d6ae41aebda42b15608db7dd3fa0).

[hagabb]

I was getting the same ImportError on Windows 11 Enterprise, but installing the VC++ runtime components (specifically, vc_redist.x64.exe) fixed the problem. Is there an equivalent module of runtime components for Linux?

Before installing vc_redist.x64:

C:\Users\sdp>python --version
Python 3.11.9
C:\Users\sdp>python -m venv openvino_env
C:\Users\sdp>openvino_env\Scripts\activate
(openvino_env) C:\Users\sdp>python -m pip install --upgrade pip
...
(openvino_env) C:\Users\sdp>pip install openvino==2024.1.0
...
(openvino_env) C:\Users\sdp>python -c "from openvino import Core; print(Core().available_devices)"
Traceback (most recent call last):
  File "<string>", line 1, in <module>
ImportError: cannot import name 'Core' from 'openvino' (C:\Users\sdp\openvino_env\Lib\site-packages\openvino\__init__.py)

After installing vc_redist.x64:

(openvino_env) C:\Users\sdp>python -c "from openvino import Core; print(Core().available_devices)"
['CPU', 'NPU']

(openvino_env) C:\Users\sdp>python -c "import openvino; print(openvino.__version__)"
2024.1.0-15008-f4afc983258-releases/2024/1

[Wovchena]

@jiwaszki, It seems Python OpenVINO depends on Visual Studio being installed (2019 or just https://www.microsoft.com/en-in/download/details.aspx?id=48145). I don't really know how to verify that so we could describe it in the docs. Maybe you have some ideas.

[ilya-lavrenov]

@jiwaszki, It seems Python OpenVINO depends on Visual Studio being installed (2019 or just https://www.microsoft.com/en-in/download/details.aspx?id=48145). I don't really know how to verify that so we could describe it in the docs. Maybe you have some ideas.

It depends on MSVC runtime (vs_redist). It's highlighted in PyPi OpenVINO page:

[hagabb]

This issue was originally reported on Linux, where OpenVINO requires the GNU development tools. Installing GCC 7.5 may fix this problem on Linux.

[ilya-lavrenov]

Do you use Python 3.8? If yes, you also need to install libpython3.8 (which seems to be transitively installed by gcc 7.5 as well)

[hagabb]

I'm using Python 3.11 on Windows 11 Enterprise. This issue was originally reported for Python 3.10 on Linux. However, the underlying cause appears similar.