command line arg "--python-use-system-env" not working anymore #88930

New Issue

Tino Schmidhofer · 2021-06-07T20:35:01+02:00

Tino Schmidhofer commented

2021-06-07 20:35:01 +02:00

System Information
Operating system: Windows-10-10.0.18363-SP0 64 Bits
Graphics card: Intel(R) UHD Graphics 620 Intel 4.5.0 - Build 26.20.100.7263

Blender Version
Broken: version: 2.93.0, branch: master, commit date: 2021-06-02 11:21, hash: 84da05a8b8
Worked: (newest version of Blender that worked as expected)

Short description of error
I am using an external python installation with additional installed modules.
Out of an set python environment I started blender with the --python-use-system-env argument. Blender starts but the in addition installed packages cannot be imported.

Exact steps for others to reproduce the error
[Please describe the exact steps needed to reproduce the issue]
[Based on the default startup or an attached .blend file (as simple as possible)]

Start of blender out of command shell:
Renamed blender python to python_
Made a link directory link to my conda python installation (same python version, additional installed packages) and named the junction link "python"

Start blender out of my conda environment:

"C:\Program Files\Blender Foundation\Blender 2.93\blender.exe" --python-use-system-env
Try to import within PYTHON INTERACTIVE CONSOLE 3.9.2 :
>>> import flask

Traceback (most recent call last):
  File "<blender_console>", line 1, in <module>
  File "C:\Program Files\Blender Foundation\Blender 2.93\2.93\python\lib\site-packages\flask\__init__.py", line 16, in <module>
    from werkzeug.exceptions import abort
  File "C:\Program Files\Blender Foundation\Blender 2.93\2.93\python\lib\site-packages\werkzeug\__init__.py", line 1, in <module>
    from .serving import run_simple as run_simple
  File "C:\Program Files\Blender Foundation\Blender 2.93\2.93\python\lib\site-packages\werkzeug\serving.py", line 18, in <module>
    import socket
  File "C:\Program Files\Blender Foundation\Blender 2.93\2.93\python\lib\socket.py", line 49, in <module>
    import _socket
ImportError: DLL load failed while importing _socket: The specified module could not be found.

Everything worked fine in Blender 2.92

**System Information** Operating system: Windows-10-10.0.18363-SP0 64 Bits Graphics card: Intel(R) UHD Graphics 620 Intel 4.5.0 - Build 26.20.100.7263 **Blender Version** Broken: version: 2.93.0, branch: master, commit date: 2021-06-02 11:21, hash: `84da05a8b8` Worked: (newest version of Blender that worked as expected) **Short description of error** I am using an external python installation with additional installed modules. Out of an set python environment I started blender with the --python-use-system-env argument. Blender starts but the in addition installed packages cannot be imported. **Exact steps for others to reproduce the error** [Please describe the exact steps needed to reproduce the issue] [Based on the default startup or an attached .blend file (as simple as possible)] Start of blender out of command shell: Renamed blender python to python_ Made a link directory link to my conda python installation (same python version, additional installed packages) and named the junction link "python" Start blender out of my conda environment: ``` "C:\Program Files\Blender Foundation\Blender 2.93\blender.exe" --python-use-system-env Try to import within PYTHON INTERACTIVE CONSOLE 3.9.2 : >>> import flask Traceback (most recent call last): File "<blender_console>", line 1, in <module> File "C:\Program Files\Blender Foundation\Blender 2.93\2.93\python\lib\site-packages\flask\__init__.py", line 16, in <module> from werkzeug.exceptions import abort File "C:\Program Files\Blender Foundation\Blender 2.93\2.93\python\lib\site-packages\werkzeug\__init__.py", line 1, in <module> from .serving import run_simple as run_simple File "C:\Program Files\Blender Foundation\Blender 2.93\2.93\python\lib\site-packages\werkzeug\serving.py", line 18, in <module> import socket File "C:\Program Files\Blender Foundation\Blender 2.93\2.93\python\lib\socket.py", line 49, in <module> import _socket ImportError: DLL load failed while importing _socket: The specified module could not be found. ``` Everything worked fine in Blender 2.92

Tino Schmidhofer commented

2021-06-07 20:35:01 +02:00

Added subscriber: @schmti

Leon Zandman commented

2021-06-07 22:21:59 +02:00

Added subscriber: @Zandman

Leon Zandman commented

2021-06-07 22:21:59 +02:00

Why do you rename Blender's Python and use a directory junction link? Shouldn't it be that once you use --python-use-system-env argument your custom Python stuff can simply be defined using environment variables, like PYTHONPATH? No need to overwrite Blender stuff. I could be wrong.

Why do you rename Blender's Python and use a directory junction link? Shouldn't it be that once you use `--python-use-system-env` argument your custom Python stuff can simply be defined using environment variables, like `PYTHONPATH`? No need to overwrite Blender stuff. I could be wrong.

Richard Antalik commented

2021-06-08 07:06:58 +02:00

Added subscriber: @iss

Richard Antalik commented

2021-06-08 07:06:58 +02:00

Can not reproduce this issue, I have tried importing flask and cv2 modules, all were good. My python from https://www.python.org/downloads/release/python-395/. I don't have anything else like conda set up here.

Can not reproduce this issue, I have tried importing `flask` and `cv2` modules, all were good. My python from https://www.python.org/downloads/release/python-395/. I don't have anything else like conda set up here.

Ankit Meel commented

2021-06-16 16:12:58 +02:00

Added subscriber: @ankitm

Ankit Meel commented

2021-06-16 16:12:58 +02:00

https://developer.blender.org/P2184 There are differences indeed in 2.93 and 2.92's sys.path with the --python-use-system-env flag.

https://developer.blender.org/P2184 There are differences indeed in 2.93 and 2.92's `sys.path` with the `--python-use-system-env` flag.

Philipp Oeser commented

2021-09-28 14:00:12 +02:00

Added subscriber: @lichtwerk

Philipp Oeser commented

2021-09-28 14:00:12 +02:00

Changed status from 'Needs Triage' to: 'Needs User Info'

Philipp Oeser commented

2021-09-28 14:00:12 +02:00

Also cannot reproduce this (everything in PYTHONPATH ends up in sys.path for me with the flag), or cannot really tell why these steps are necessary:

Renamed blender python to python_
Made a link directory link to my conda python installation (same python version, additional installed packages) and named the junction link "python"

@schmti : is there anything in PYTHONPATH for you?

Reg. the differences @ankitm was noticing (the local site-packages /Users/ankitkumar/.local/lib/python3.7/site-packages seems to be included in 2.92, but not in 2.93): same question here: @ankitm : is there anything in PYTHONPATH for you? Or is the addition of the the local site-packages purely "automatic"?
Now since 2.93 uses python 3.9, do you have something like /Users/ankitkumar/.local/lib/python3.9/site-packages as well?

Note: I have .local folders for both python versions, but they are not added automagically [neither with --python-use-system-env nor without -- only if I put them in PYTHONPATH]

Also cannot reproduce this (everything in `PYTHONPATH` ends up in `sys.path` for me with the flag), or cannot really tell why these steps are necessary: > Renamed blender python to python_ > Made a link directory link to my conda python installation (same python version, additional installed packages) and named the junction link "python" @schmti : is there anything in PYTHONPATH for you? Reg. the differences @ankitm was noticing (the local `site-packages` `/Users/ankitkumar/.local/lib/python3.7/site-packages` seems to be included in 2.92, but not in 2.93): same question here: @ankitm : is there anything in PYTHONPATH for you? Or is the addition of the the local `site-packages` purely "automatic"? Now since 2.93 uses python 3.9, do you have something like `/Users/ankitkumar/.local/lib/python3.9/site-packages` as well? Note: I have `.local` folders for both python versions, but they are not added automagically [neither with `--python-use-system-env` nor without -- only if I put them in PYTHONPATH]

Ankit Meel commented

2021-09-28 14:44:07 +02:00

--python-use-system-env
Allow Python to use system environment variables such as PYTHONPATH and the user site-packages directory.

https://docs.python.org/3/library/site.html#site.USER_SITE

I can't redo it anymore..
In 2.93.0, 2.93.5, 3.0, .local site package dir is added to sys.path when using --python-use-system-env without using any env variable.

> --python-use-system-env > Allow Python to use system environment variables such as PYTHONPATH and the user site-packages directory. https://docs.python.org/3/library/site.html#site.USER_SITE I can't redo it anymore.. In 2.93.0, 2.93.5, 3.0, .local site package dir is added to sys.path when using `--python-use-system-env` without using any env variable.

Philipp Oeser commented

2021-10-14 10:03:10 +02:00

Changed status from 'Needs User Info' to: 'Needs Triage'

Omar Emara commented

2022-02-25 14:23:38 +01:00

Added subscriber: @OmarEmaraDev

Omar Emara commented

2022-02-25 14:23:38 +01:00

Changed status from 'Needs Triage' to: 'Needs User Info'

Omar Emara commented

2022-02-25 14:23:38 +01:00

I can't replicate this either. As mentioned before, this is probably not how you should install additional modules from another environment, can you try without messing with Blender's python?
Assuming you have some environment with a compatible python version, you can launch blender with PYTHONPATH=/path/to/environment/lib/python3.10/site-packages blender --python-use-system-env.
Also see https://developer.blender.org/T75291#901886.

I can't replicate this either. As mentioned before, this is probably not how you should install additional modules from another environment, can you try without messing with Blender's python? Assuming you have some environment with a compatible python version, you can launch blender with `PYTHONPATH=/path/to/environment/lib/python3.10/site-packages blender --python-use-system-env`. Also see https://developer.blender.org/T75291#901886.

Richard Antalik commented

2022-04-12 21:26:41 +02:00

Changed status from 'Needs User Info' to: 'Archived'

Richard Antalik closed this issue

2022-04-12 21:26:41 +02:00

Richard Antalik commented

2022-04-12 21:26:41 +02:00

No activity for more than a week. As per the tracker policy we assume the issue is gone and can be closed.

Thanks again for the report. If the problem persists please open a new report with the required information.

No activity for more than a week. As per the tracker policy we assume the issue is gone and can be closed. Thanks again for the report. If the problem persists please open a new report with the required information.

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command line arg "--python-use-system-env" not working anymore #88930