python调用C语言

#include<stdio.h>
void display(char* msg)
{
printf("%s\n",msg);
}

gcc -c test.c                           #生成test.o文件
gcc -o test.so -shared -fPIC test.c     #生成test.so文件

#!/usr/bin/python
import ctypes
import os
libtest = ctypes.cdll.LoadLibrary(os.getcwd() + '/test.so')
libtest.display("hello world!")

hello world!