nogil runtime error

[houshijie-2020]

printf Py_GetPythonHome : /usr/local/nogil-py/

printf Py_GetPythonPath : /usr/local/nogil-py/lib/python39.zip:/usr/local/nogil-py/lib:/usr/local/nogil-py/lib/python3.9/site-packages:/usr/local/nogil-py/lib/python3.9:/usr/local/nogil-py/lib/python3.9/lib-dynload:/usr/local/nogil-py/lib/python39.zip:/usr/local/nogil-py/lib/python3.9:/usr/local/nogil-py/lib/python3.9/lib-dynload

Traceback (most recent call last):
File "", line 1, in
File "/usr/local/nogil-py/lib/python3.9/site-packages/MNN/init.py", line 4, in
from _mnncengine import *
ImportError: /usr/local/nogil-py/lib/python3.9/site-packages/_mnncengine.nogil-39b-x86_64-linux-gnu.so: undefined symbol: _Py_TrueStruct

[houshijie-2020]

#include
#include <stdio.h>
#include

#include "Python.h"

using namespace std;

void Python_run_str(const string& str)
{
PyRun_SimpleString(str.c_str());

}

void Python_run_file(const string& file_name)
{
FILE* file;
file = fopen(file_name.c_str(), "r");
PyRun_SimpleFile(file, file_name.c_str());
fclose(file);
}

int main()
{
printf("printf Py_GetPythonHome : %ls\n\n\n\n", Py_GetPythonHome());

Py_Initialize();
printf("printf content start: %ls\n\n\n\n", Py_GetPath());
Python_run_str("import  MNN\nprint('import  MNN sucessfully')\n");

if (Py_FinalizeEx() < 0) {
    cout << "Py_FinalizeEx err" << endl;
    exit(120);
}

int a = 0;
cout << "input a integer" << endl;
cin >> a;
return 0;

}

[colesbury]

It's not clear to me what's you're trying to do. It looks like you have a custom C API extension and also are trying to embed the interpreter? It looks likely that you have some build misconfiguration.

Can you put together a complete reproduction, including the code and commands to build it?

[houshijie-2020]

i am trying to embed the interpreter （MNN is a a custom C API extension）
the comiple command:
gcc test_mnn.cpp -lstdc++ -I/usr/local/nogil-py/include/python3.9/ -lm -L/usr/local/nogil-py/lib/ -lpython3.9 -lpthread -lutil -ldl -o test_mnn

gcc version:
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/local/libexec/gcc/x86_64-pc-linux-gnu/10.3.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ./configure -enable-checking=release -enable-languages=c,c++ -disable-multilib
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 10.3.0 (GCC)

export:
export PYTHONPATH=/usr/local/nogil-py/lib/python39.zip:/usr/local/nogil-py/lib:/usr/local/nogil-py/lib/python3.9/site-packages:/usr/local/nogil-py/lib/python3.9:/usr/local/nogil-py/lib/python3.9/lib-dynload

export PYTHONHOME=/usr/local/nogil-py/