python下面通过ctypes模块调用c++库的方法

foo.cpp:#include <iostream>class Foo{public:void bar(){std::cout << "Hello" << std::endl;}};int test() {std::cout<<"hello world"<<std::endl;return 0;}extern "C" {Foo* Foo_new(){return new Foo();}void Foo_bar(Foo* foo){foo->bar();}int Test() {return test();}}通过 g++ -o libfoo.so -shared -fPIC foo.cpp  生产foo.sousec.pyfrom ctypes import cdlllib = cdll.LoadLibrary('./libfoo.so')#class Foo(object):# def __init__(self):# self.obj = lib.Foo_new()# def bar(self):# lib.Foo_bar(self.obj)lib.Test()#f = Foo()#f.bar() #and you will see "Hello" on the screen

注释掉的是调用c++类的方法，lib.Test()直接调用方法