Python调用c++

#include <stdio.h> 
#include <stdlib.h> 
int foo(int a, int b) 
{ 
  printf("you input %d and %d\n", a, b); 
  return a+b; 
} 

gcc -o libpycall.so -shared -fPIC pycall.c

import ctypes
ll=ctypes.cdll.LoadLibrary
lib=ll(‘/Users/***/libpycall.so‘)
print lib.foo(1,3)

#include <iostream>
using namespace std;
 
class TestLib
{
    public:
        void display();
        void display(int a);
};
void TestLib::display() {
    cout<<"First display"<<endl;
}
 
void TestLib::display(int a) {
    cout<<"Second display:"<<a<<endl;
}
extern "C" {
    TestLib obj;
    void display() {
        obj.display();
      }
    void display_int() {
        obj.display(2);
      }
}

g++ -o libpycallclass.so -shared -fPIC pycallclass.cpp

import ctypes
so = ctypes.cdll.LoadLibrary
lib = so("/User/***/libpycallclass.so")
print ‘display()‘
lib.display()
print ‘display(100)‘
lib.display_int(100)