boost-python

问题 C++ Model Say I have the following C++ data structures I wish to expose to Python. #include <memory> #include <vector> struct mystruct { int a, b, c, d, e, f, g, h, i, j, k, l, m; }; typedef std::vector<std::shared_ptr<mystruct>> mystruct_list; Boost Python I can wrap these fairly effectively using boost::python with the following code, easily allowing me to use the existing mystruct (copying the shared_ptr) rather than recreating an existing object. #include "mystruct.h" #include <boost

问题 I have python embedded in a C++ application. The C++ calls python and passes it as an argument a C++ object. that object has some virtual functions and can be a base class for some derived class. How do I make boost::python understand that it's a virtual function? consider the following: in C++: class Base { public: virtual void func(); } class Derived { public: virtual void func(); } BOOST_PYTHON_MODULE(module_api) { class_<Base>("Base") .def("func", &Base::func); // ?? what should I put

问题 Using boost::python , I have been able to wrap a class ( Node ) which has some virtual functions, and it's been a hoot, but now I'm trying to override setattr/getattr for the class. I've got boost::python to call my own setattr implementation, but I can't figure out how to avoid the recursion that happens. So I have a Node class, and I want to be able to write: node1.param1 = 5 # Call node.SetParam node1.plain_member = 7 # Call object.__setattr__ So far, I have (very abridged): namespace bpy

问题 This is probably a really basic question but I haven't been able to find a solution anywhere. I'm building a Python extension in C++ using Boost.Python and need to link my project with libpcap, but nothing I specify seems to point bjam to the correct location. Pcap is currently installed to /usr/local/include (OS X 10.9) and I can import it with XCode, Make, or any other build system. However when I try to run bjam it gives me the linker error "Undefined symbols for architecture x86_64." I

问题 I have a dll written in C++ that I want to export to Python for running regression and unit-testing (it's just easier to maintain and run the regression with Python). To this purpose I want to use Boost.Python to export the main API of the dll so it will be usable in Python. My assemblies look as follows: MyLibrary.dll //main API C++ library MyLibrary.pyd //a thin dll project containing only the BOOST_PYTHON_MODULE export definitions (dependant on MyLibrary.dll) ... //other C++ dll files that

问题 ANSWERED Ok, I solved this issue. Its all in how you initialize the thread state. You don't need to use ReleaseLock at all. Simply add InitThreads call to your module definition: BOOST_PYTHON_MODULE(ModuleName) { PyEval_InitThreads(); ... } Ok, I have attempted to diagnose this problem for hours and poured through what seems like every example on the web. Getting tired now so I may be missing something obvious but here is what is happening: I am wrapping a library in boost python. I am

问题 I am embedding python in my C++ application using boost python. I am a C++ programmer, with very limited knowledge of Python. I have a C++ class, PyExpression . Each instance of this class has a string expStr , which is a short user-entered (at runtime) python program, that is executed by calling boost::python::exec . Briefly, I have this set up as: //import main and its globals bp::object main = bp::import("__main__"); bp::object main_namespace = main.attr("__dict__"); where main and main

问题 Suppose there is a class MyArray which implements an array of SomeType . It is written in C++ and wrapped into Python using boost::python. BOOST_PYTHON_MODULE(my_array_module) { class_<MyArray>("MyArray") // a few '.def's ... .def("__getitem__", ???) ; } The __getitem__ function in Python can either take an index and return SomeType value, or take a slice object and return slice. There is how to deal with functions overloaded in C++ to wrap them into different Python functions. There is how

问题 I am trying to use BoostPython to write a program in C++. My presettings are: a. Win32 Console Application. b. Property->C/C++->General->Additional Include Directories->C:\Python27\include;C:\Program Files\boost\boost_1_54_0; c. Property->Linker->General->Additional Library Directions->C:\Python27\libs; d. Microsoft Visual Studio 2012 Express Version + Python 27 + Boost 1.54 And my code is like follows: #include <boost/python.hpp> using namespace boost::python; int main( int argc, char **

问题 I am working on exporting two classes class zoo (extzoo and intzoo namespaces), class animal (extanim and intanim namespaces)" methods which are defined within two level nested namespaces. I want to expose these methods to Python interpreter from where I can access them. I have written code, created a shared library but when I import it into a python I get an error. I will appreciate your guidance on this. I have followed the answer given on the following link in similar context of exposing C