Unable to run with Python debug library #1412
Description
Environment
- Pythonnet version: master@ f2dc8f1
- Python version: 3.6 (probably others)
- Operating System: Ubuntu 20.04 (probably others)
- .NET Runtime: netcore 3.1, mono
Details
- While debugging a build failure in Fix exception refcnt #1402 , I tried to use a debug build of python,
note: Python 3.6 was installed from the deadsnakes PPA.
Repro:
- Install Python debug packages
- Create a and use a virtual environment using the Python debug executable
- Apply/cherry-pick filmor@ee3503b to run with a static libpython
- change the
dotnet_configto"debug"(line ~43 in setup.py) - run
python -m pythonnet.find_libpython --exportand export the result in the environment, make sure it points to the debug library python setup.py developthen runpytest(with either--runtime monoor--runtime netcore)- It will error out with:
Failed to initialize pythonnet: System.TypeInitializationException: The type initializer for 'Delegates' threw an exception. ---> System.MissingMethodException: Failed to load symbol PyModule_Create2: /home/user/dev/36-dbg/bin/python: undefined symbol: PyModule_Create2
at Python.Runtime.Platform.LinuxLoader.GetFunction (System.IntPtr dllHandle, System.String name) [0x00050] in <12881a58dd5544c59504de515c25928b>:0
at Python.Runtime.Runtime+Delegates.GetFunctionByName (System.String functionName, System.IntPtr libraryHandle) [0x00000] in <12881a58dd5544c59504de515c25928b>:0
at Python.Runtime.Runtime+Delegates..cctor () [0x01793] in <12881a58dd5544c59504de515c25928b>:0
--- End of inner exception stack trace ---
at Python.Runtime.Runtime.PyGILState_Ensure () [0x00000] in <12881a58dd5544c59504de515c25928b>:0
at Python.Runtime.Loader.Initialize (System.IntPtr data, System.Int32 size) [0x0003c] in <12881a58dd5544c59504de515c25928b>:0
at Python.Runtime.Runtime.PyGILState_Ensure () [0x00000] in <12881a58dd5544c59504de515c25928b>:0
at Python.Runtime.Loader.Initialize (System.IntPtr data, System.Int32 size) [0x0003c] in <12881a58dd5544c59504de515c25928b>:0 INTERNALERROR> Traceback (most recent call last):
INTERNALERROR> File "/home/user/dev/36-dbg/lib/python3.6/site-packages/_pytest/main.py", line 265, in wrap_session
If I fix that, there's another error in the TypeOffsets ctor (all offsets are null)
Activity
lostmsu commentedon Apr 13, 2021
@BadSingleton please review linked PRs. They should unblock using debug builds.
I'd be happy if you can also start with and review #1441 , because it will partially supersede #1426