Python 调用Py_Finalize返回assertation错误
我尝试调用C++的python代码,我用的是下面的代码> qTox类.< /P>Python 调用Py_Finalize返回assertation错误,python,multithreading,qt,qthread,Python,Multithreading,Qt,Qthread,我尝试调用C++的python代码,我用的是下面的代码> qTox类.< /P> myclassName::myclassName() { Py_Initialize(); } myclassName::~myclassName() { Py_Finalize(); } void myclassName::cpp_wrapper(string out1, string out2){ ThreadState = PyEval_SaveThread(); GIL
myclassName::myclassName()
{
Py_Initialize();
}
myclassName::~myclassName()
{
Py_Finalize();
}
void myclassName::cpp_wrapper(string out1, string out2){
ThreadState = PyEval_SaveThread();
GILState = PyGILState_Ensure();
Py_DECREF(PyImport_ImportModule("threading"));
PyObject *moduleMain = PyImport_ImportModule("__main__");
PyRun_SimpleString(
"def wrapper(arg1, arg2) : \n"\
" import sklearn \n"\
" print(arg1, arg2) \n"\
);
PyObject *func = PyObject_GetAttrString(moduleMain, "wrapper");
PyObject *args = PyTuple_Pack(2, PyUnicode_FromString(out1.c_str()), PyUnicode_FromString(out1.c_str()));
Py_DECREF(moduleMain);
Py_DECREF(func);
Py_DECREF(args);
PyGILState_Release(GILState);
PyEval_RestoreThread(ThreadState);
}
void myclassName::run()
{
algorithm_wrapper("Hello1", "Hello2");
//here a sginal is emmited to the main thread function to delete myclassName* item.
}
int main(){
myclassName* item = new myclassName();
item->run();
}
执行很好(感谢上一篇文章中的@Thomas),但是当调用Py\u Finalize
时,返回以下错误。执行python代码时,会调用Py_Finalize
,并向主线程中的插槽发出信号以删除类对象。我还尝试在主线程中初始化和完成python(再次发送信号),但返回了相同的错误
Exception ignored in: <module 'threading' from 'C:\\Users\\username\\AppData\\Local\\Continuum\\Anaconda3\\Lib\\threading.py'>
Traceback (most recent call last):
File "C:\Users\username\AppData\Local\Continuum\Anaconda3\Lib\threading.py", line 1289, in _shutdown
assert tlock.locked()
.cpp文件
正如Python官方网站关于Py_Finalize中提到的: “错误和警告:模块和模块中对象的销毁是按随机顺序进行的;这可能会导致析构函数(del()方法)在依赖于其他对象(甚至函数)时失败。”或模块。Python加载的动态加载的扩展模块不会被卸载。Python解释器分配的少量内存可能不会被释放(如果发现泄漏,请报告)。对象之间循环引用中占用的内存不会被释放。扩展模块分配的某些内存可能不会被释放。如果多次调用其初始化例程,则某些扩展可能无法正常工作;如果应用程序多次调用Py_Initialize()和Py_Finalize(),则可能会发生这种情况。”
因此,在调用Py_finalize之前,您需要手动完成ad dispose资源和流程的最终确定您是否能够解决此问题?怎么做?@AbidRahmanK我在我的帖子中根据我使用的代码进行了编辑。老实说,我记不太清楚了。我希望这有帮助。
class myclassName : public QThread
{
Q_OBJECT
public:
myclassName();
~myclassName();
protected:
void run();
private:
QMutex mutex_Python;
};
myclassName::myclassName():
mutex_Python(QMutex::Recursive)
{
Py_Initialize();
}
myclassName::~myclassName()
{
Py_Finalize();
}
void myclassName::cpp_wrapper(string out1, string out2){
//ThreadState = PyEval_SaveThread();
//GILState = PyGILState_Ensure();
mutex_Python.lock();
Py_DECREF(PyImport_ImportModule("threading"));
PyObject *moduleMain = PyImport_ImportModule("__main__");
PyRun_SimpleString(
"def wrapper(arg1, arg2) : \n"\
" import sklearn \n"\
" print(arg1, arg2) \n"\
);
PyObject *func = PyObject_GetAttrString(moduleMain, "wrapper");
PyObject *args = PyTuple_Pack(2, PyUnicode_FromString(out1.c_str()), PyUnicode_FromString(out1.c_str()));
Py_DECREF(moduleMain);
Py_DECREF(func);
Py_DECREF(args);
mutex_Python.unlock();
//PyGILState_Release(GILState);
//PyEval_RestoreThread(ThreadState);
}
void myclassName::run()
{
algorithm_wrapper("Hello1", "Hello2");
//here a sginal is emmited to the main thread function to delete myclassName* item.
}
int main(){
myclassName* item = new myclassName();
item->run();
}