c++;boost python列表提取导致分段错误
我在使用boostpython时遇到了一个奇怪的问题。在尝试对我的一些代码进行单元测试时,我发现在创建boost::python::list并向其添加信息后,试图提取该数据会导致seg错误。下面是我的问题的一个简单例子 main.cppc++;boost python列表提取导致分段错误,python,c++,boost,Python,C++,Boost,我在使用boostpython时遇到了一个奇怪的问题。在尝试对我的一些代码进行单元测试时,我发现在创建boost::python::list并向其添加信息后,试图提取该数据会导致seg错误。下面是我的问题的一个简单例子 main.cpp #包括 int main() { boost::python::list testList; 浮点数a=1.12; 附加(a); //该线路导致seg故障 float b=boost::python::extract(testList[0]); 返回0; }
#包括
int main()
{
boost::python::list testList;
浮点数a=1.12;
附加(a);
//该线路导致seg故障
float b=boost::python::extract(testList[0]);
返回0;
}
和myCMakeLists.txt
cmake_minimum_required(VERSION 2.8.3)
project(boost_python_test)
find_package(Boost REQUIRED COMPONENTS system thread python)
find_package(PythonLibs REQUIRED)
IF(Boost_FOUND)
SET(Boost_USE_STATIC_LIBS OFF)
SET(Boost_USE_MULTITHREADED ON)
SET(Boost_USE_STATIC_RUNTIME OFF)
ENDIF()
set(SOURCES_DIRECTORY ${PROJECT_SOURCE_DIR}/src)
set(PROJECT_SOURCES
${SOURCES_DIRECTORY}/main.cpp
)
include_directories(${Boost_INCLUDE_DIRS} ${PYTHON_INCLUDE_DIRS})
## Declare a cpp executable
add_executable(${PROJECT_NAME}
${SOURCES_DIRECTORY}/main.cpp
)
target_link_libraries(${PROJECT_NAME} ${Boost_LIBRARIES} ${PYTHON_LIBRARIES})
编译器输出为:
-- The C compiler identification is GNU 4.8.2
-- The CXX compiler identification is GNU 4.8.2
-- Check for working C compiler: /usr/bin/cc
-- Check for working C compiler: /usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/c++
-- Check for working CXX compiler: /usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Boost version: 1.54.0
-- Found the following Boost libraries:
-- system
-- thread
-- python
-- Found PythonLibs: /usr/lib/x86_64-linux-gnu/libpython2.7.so (found version "2.7.6")
-- Configuring done
-- Generating done
-- Build files have been written to: /home/jordan/Git/boost_python_test/build
您必须使用Py_初始化才能工作。退房 . @每个人都是这个解决方案背后的人和真正的头脑
#include <boost/python.hpp>
int main()
{
// Need this line for it to work
Py_Initialize();
boost::python::list testList;
float a = 1.12;
testList.append(a);
// This line no longer results in a seg fault
float b = boost::python::extract<float>(testList[0]);
return 0;
}
#包括
int main()
{
//需要这条线才能工作吗
Py_初始化();
boost::python::list testList;
浮点数a=1.12;
附加(a);
//该线路不再导致seg故障
float b=boost::python::extract(testList[0]);
返回0;
}
如果我在函数中定义了boost::python::list
,我应该调用Py_Initialize()代码>?