Unable to load coreclr from Pythonnet in blender 4.0 #115778

New Issue

and removed

2023-12-06 14:35:39 +01:00

labels 2023-12-06 02:32:16 +01:00

Logan-G commented

Can I ask how you produced those errors? If that's a pip error, pythonnet's current version is 3.0.3, so you should be able to just download it via something like pip install pythonnet.

Can I ask how you produced those errors? If that's a pip error, pythonnet's current version is 3.0.3, so you should be able to just download it via something like `pip install pythonnet`.

Germano Cavalcante added

and removed

2023-12-06 17:18:13 +01:00

labels 2023-12-06 15:27:23 +01:00

Germano Cavalcante commented

I made a mistake in the previous installation. But I tried again and I can't reproduce the problem.

Looking at the error log, this problem should simply be replicable with the following commands:

D:\BlenderDev\x64-Release\bin\RelWithDebInfo\4.1\python\bin\python.exe -m ensurepip --upgrade
D:\BlenderDev\x64-Release\bin\RelWithDebInfo\4.1\python\bin\python.exe -m pip install pythonnet
D:\BlenderDev\x64-Release\bin\RelWithDebInfo\4.1\python\bin\python.exe -c "import pythonnet | pythonnet.load("coreclr")"

Note that the python.exe used is the one that comes within Blender, and the modules must be installed in that module's library within Blender.

But in your error log, the module directory is: "~/.local/lib/python3.10/site-packages/pythonnet/__init__.py".
This shows that you are using the module from another location, probably incompatible.

Could you ensure that you are installing and using the pythonnet module strictly within the Blender's Python environment?
Please rerun the installation and test with the noted commands, ensuring that you are referencing the correct python.exe that is bundled with Blender.

I made a mistake in the previous installation. But I tried again and I can't reproduce the problem. Looking at the error log, this problem should simply be replicable with the following commands: ``` D:\BlenderDev\x64-Release\bin\RelWithDebInfo\4.1\python\bin\python.exe -m ensurepip --upgrade D:\BlenderDev\x64-Release\bin\RelWithDebInfo\4.1\python\bin\python.exe -m pip install pythonnet D:\BlenderDev\x64-Release\bin\RelWithDebInfo\4.1\python\bin\python.exe -c "import pythonnet | pythonnet.load("coreclr")" ``` Note that the `python.exe` used is the one that comes within Blender, and the modules must be installed in that module's library within Blender. But in your error log, the module directory is: `"~/.local/lib/python3.10/site-packages/pythonnet/__init__.py"`. This shows that you are using the module from another location, probably incompatible. Could you ensure that you are installing and using the `pythonnet` module strictly within the Blender's Python environment? Please rerun the installation and test with the noted commands, ensuring that you are referencing the correct `python.exe` that is bundled with Blender.

Germano Cavalcante added

and removed

2023-12-06 22:20:08 +01:00

labels 2023-12-06 17:18:24 +01:00

Logan-G commented

Did you try reproducing the problem in blender? I'm able to perform the commands you suggested using blender's python binary directly and am able to replicate your result that there aren't any issues.

However, when I try to load coreclr inside of blender say in the python console, it fails with the original error. I verified that the pythonnet install I'm using is local to the python blender binary and is using the right python executable.

>>> import sys
>>> sys.executable
'~/Downloads/blender-4.0.1-linux-x64/4.0/python/bin/python3.10'

>>> import pythonnet
>>> import inspect
>>> inspect.getsourcefile(pythonnet)
'~/Downloads/blender-4.0.1-linux-x64/4.0/python/lib/python3.10/site-packages/pythonnet/__init__.py'

I also purged any other instances of pythonnet from my computer and reinstalled pythonnet to the local folder after ensuring it failed to import pythonnet.

Here's the error posted again for clarity in case something I didn't notice changed:

Failed to initialize pythonnet: System.TypeInitializationException: The type initializer for 'Delegates' threw an exception.
 ---> Python.Runtime.BadPythonDllException: Runtime.PythonDLL was not set or does not point to a supported Python runtime DLL. See https://github.com/pythonnet/pythonnet#embedding-python-in-net
 ---> System.MissingMethodException: Failed to load symbol Py_Main: ./blender: undefined symbol: Py_Main
   at Python.Runtime.Platform.PosixLoader.GetFunction(IntPtr dllHandle, String name) in /tmp/build-via-sdist-h3j67_wc/pythonnet-3.0.3/src/runtime/Native/LibraryLoader.cs:line 85
   at Python.Runtime.Runtime.Delegates.GetFunctionByName(String functionName, IntPtr libraryHandle) in /tmp/build-via-sdist-h3j67_wc/pythonnet-3.0.3/src/runtime/Runtime.Delegates.cs:line 296
   --- End of inner exception stack trace ---
   at Python.Runtime.Runtime.Delegates.GetFunctionByName(String functionName, IntPtr libraryHandle) in /tmp/build-via-sdist-h3j67_wc/pythonnet-3.0.3/src/runtime/Runtime.Delegates.cs:line 300
   at Python.Runtime.Runtime.Delegates..cctor() in /tmp/build-via-sdist-h3j67_wc/pythonnet-3.0.3/src/runtime/Runtime.Delegates.cs:line 38
   --- End of inner exception stack trace ---
   at Python.Runtime.Runtime.Delegates.get_PyGILState_Ensure() in /tmp/build-via-sdist-h3j67_wc/pythonnet-3.0.3/src/runtime/Runtime.Delegates.cs:line 319
   at Python.Runtime.Runtime.PyGILState_Ensure() in /tmp/build-via-sdist-h3j67_wc/pythonnet-3.0.3/src/runtime/Runtime.cs:line 705
   at Python.Runtime.PythonEngine.AcquireLock() in /tmp/build-via-sdist-h3j67_wc/pythonnet-3.0.3/src/runtime/PythonEngine.cs:line 479
   at Python.Runtime.Py.GILState..ctor() in /tmp/build-via-sdist-h3j67_wc/pythonnet-3.0.3/src/runtime/Py.cs:line 27
   at Python.Runtime.Py.GIL() in /tmp/build-via-sdist-h3j67_wc/pythonnet-3.0.3/src/runtime/Py.cs:line 13
   at Python.Runtime.Loader.Initialize(IntPtr data, Int32 size) in /tmp/build-via-sdist-h3j67_wc/pythonnet-3.0.3/src/runtime/Loader.cs:line 26
   at Python.Runtime.Runtime.Delegates.get_PyGILState_Ensure() in /tmp/build-via-sdist-h3j67_wc/pythonnet-3.0.3/src/runtime/Runtime.Delegates.cs:line 319
   at Python.Runtime.Runtime.PyGILState_Ensure() in /tmp/build-via-sdist-h3j67_wc/pythonnet-3.0.3/src/runtime/Runtime.cs:line 705
   at Python.Runtime.PythonEngine.AcquireLock() in /tmp/build-via-sdist-h3j67_wc/pythonnet-3.0.3/src/runtime/PythonEngine.cs:line 479
   at Python.Runtime.Py.GILState..ctor() in /tmp/build-via-sdist-h3j67_wc/pythonnet-3.0.3/src/runtime/Py.cs:line 27
   at Python.Runtime.Py.GIL() in /tmp/build-via-sdist-h3j67_wc/pythonnet-3.0.3/src/runtime/Py.cs:line 13
   at Python.Runtime.Loader.Initialize(IntPtr data, Int32 size) in /tmp/build-via-sdist-h3j67_wc/pythonnet-3.0.3/src/runtime/Loader.cs:line 26Traceback (most recent call last):
  File "~/Downloads/blender-4.0.1-linux-x64/4.0/scripts/addons/pythonnet_install_bug_demo.py", line 26, in execute
    pythonnet.load("coreclr")
  File "~/Downloads/blender-4.0.1-linux-x64/4.0/python/lib/python3.10/site-packages/pythonnet/__init__.py", line 146, in load
    raise RuntimeError("Failed to initialize Python.Runtime.dll")
RuntimeError: Failed to initialize Python.Runtime.dll
Error: Python: Traceback (most recent call last):
  File "~/Downloads/blender-4.0.1-linux-x64/4.0/scripts/addons/pythonnet_install_bug_demo.py", line 26, in execute
    pythonnet.load("coreclr")
  File "~/Downloads/blender-4.0.1-linux-x64/4.0/python/lib/python3.10/site-packages/pythonnet/__init__.py", line 146, in load
    raise RuntimeError("Failed to initialize Python.Runtime.dll")
RuntimeError: Failed to initialize Python.Runtime.dll

Did you try reproducing the problem in blender? I'm able to perform the commands you suggested using blender's python binary directly and am able to replicate your result that there aren't any issues. However, when I try to load coreclr inside of blender say in the python console, it fails with the original error. I verified that the pythonnet install I'm using is local to the python blender binary and is using the right python executable. ``` >>> import sys >>> sys.executable '~/Downloads/blender-4.0.1-linux-x64/4.0/python/bin/python3.10' >>> import pythonnet >>> import inspect >>> inspect.getsourcefile(pythonnet) '~/Downloads/blender-4.0.1-linux-x64/4.0/python/lib/python3.10/site-packages/pythonnet/__init__.py' ``` I also purged any other instances of pythonnet from my computer and reinstalled pythonnet to the local folder after ensuring it failed to import pythonnet. Here's the error posted again for clarity in case something I didn't notice changed: ``` Failed to initialize pythonnet: System.TypeInitializationException: The type initializer for 'Delegates' threw an exception. ---> Python.Runtime.BadPythonDllException: Runtime.PythonDLL was not set or does not point to a supported Python runtime DLL. See https://github.com/pythonnet/pythonnet#embedding-python-in-net ---> System.MissingMethodException: Failed to load symbol Py_Main: ./blender: undefined symbol: Py_Main at Python.Runtime.Platform.PosixLoader.GetFunction(IntPtr dllHandle, String name) in /tmp/build-via-sdist-h3j67_wc/pythonnet-3.0.3/src/runtime/Native/LibraryLoader.cs:line 85 at Python.Runtime.Runtime.Delegates.GetFunctionByName(String functionName, IntPtr libraryHandle) in /tmp/build-via-sdist-h3j67_wc/pythonnet-3.0.3/src/runtime/Runtime.Delegates.cs:line 296 --- End of inner exception stack trace --- at Python.Runtime.Runtime.Delegates.GetFunctionByName(String functionName, IntPtr libraryHandle) in /tmp/build-via-sdist-h3j67_wc/pythonnet-3.0.3/src/runtime/Runtime.Delegates.cs:line 300 at Python.Runtime.Runtime.Delegates..cctor() in /tmp/build-via-sdist-h3j67_wc/pythonnet-3.0.3/src/runtime/Runtime.Delegates.cs:line 38 --- End of inner exception stack trace --- at Python.Runtime.Runtime.Delegates.get_PyGILState_Ensure() in /tmp/build-via-sdist-h3j67_wc/pythonnet-3.0.3/src/runtime/Runtime.Delegates.cs:line 319 at Python.Runtime.Runtime.PyGILState_Ensure() in /tmp/build-via-sdist-h3j67_wc/pythonnet-3.0.3/src/runtime/Runtime.cs:line 705 at Python.Runtime.PythonEngine.AcquireLock() in /tmp/build-via-sdist-h3j67_wc/pythonnet-3.0.3/src/runtime/PythonEngine.cs:line 479 at Python.Runtime.Py.GILState..ctor() in /tmp/build-via-sdist-h3j67_wc/pythonnet-3.0.3/src/runtime/Py.cs:line 27 at Python.Runtime.Py.GIL() in /tmp/build-via-sdist-h3j67_wc/pythonnet-3.0.3/src/runtime/Py.cs:line 13 at Python.Runtime.Loader.Initialize(IntPtr data, Int32 size) in /tmp/build-via-sdist-h3j67_wc/pythonnet-3.0.3/src/runtime/Loader.cs:line 26 at Python.Runtime.Runtime.Delegates.get_PyGILState_Ensure() in /tmp/build-via-sdist-h3j67_wc/pythonnet-3.0.3/src/runtime/Runtime.Delegates.cs:line 319 at Python.Runtime.Runtime.PyGILState_Ensure() in /tmp/build-via-sdist-h3j67_wc/pythonnet-3.0.3/src/runtime/Runtime.cs:line 705 at Python.Runtime.PythonEngine.AcquireLock() in /tmp/build-via-sdist-h3j67_wc/pythonnet-3.0.3/src/runtime/PythonEngine.cs:line 479 at Python.Runtime.Py.GILState..ctor() in /tmp/build-via-sdist-h3j67_wc/pythonnet-3.0.3/src/runtime/Py.cs:line 27 at Python.Runtime.Py.GIL() in /tmp/build-via-sdist-h3j67_wc/pythonnet-3.0.3/src/runtime/Py.cs:line 13 at Python.Runtime.Loader.Initialize(IntPtr data, Int32 size) in /tmp/build-via-sdist-h3j67_wc/pythonnet-3.0.3/src/runtime/Loader.cs:line 26Traceback (most recent call last): File "~/Downloads/blender-4.0.1-linux-x64/4.0/scripts/addons/pythonnet_install_bug_demo.py", line 26, in execute pythonnet.load("coreclr") File "~/Downloads/blender-4.0.1-linux-x64/4.0/python/lib/python3.10/site-packages/pythonnet/__init__.py", line 146, in load raise RuntimeError("Failed to initialize Python.Runtime.dll") RuntimeError: Failed to initialize Python.Runtime.dll Error: Python: Traceback (most recent call last): File "~/Downloads/blender-4.0.1-linux-x64/4.0/scripts/addons/pythonnet_install_bug_demo.py", line 26, in execute pythonnet.load("coreclr") File "~/Downloads/blender-4.0.1-linux-x64/4.0/python/lib/python3.10/site-packages/pythonnet/__init__.py", line 146, in load raise RuntimeError("Failed to initialize Python.Runtime.dll") RuntimeError: Failed to initialize Python.Runtime.dll ```

Germano Cavalcante commented

2023-12-06 22:31:09 +01:00

Did you try reproducing the problem in blender?

Yes, and the addon worked normally in Blender.
I think the problem is not related to Blender.

Check environment variables such as PYTHONPATH, they can cause Python to use some modules in the system which can result in incompatibility.

I noticed that you use Linux. Perhaps this could influence the result. I'll let someone else on the triage team take a look.

> Did you try reproducing the problem in blender? Yes, and the addon worked normally in Blender. I think the problem is not related to Blender. Check environment variables such as PYTHONPATH, they can cause Python to use some modules in the system which can result in incompatibility. I noticed that you use Linux. Perhaps this could influence the result. I'll let someone else on the triage team take a look.

Germano Cavalcante added

and removed