ctypes 数据类型和 C数据类型 对照表

ctypes type	C type	Python type
	_Bool	bool (1)
	char	1-character string
	wchar_t	1-character unicode string
	char	int/long
	unsigned char	int/long
	short	int/long
	unsigned short	int/long
	int	int/long
	unsigned int	int/long
	long	int/long
	unsigned long	int/long
	__int64 or long long	int/long
	unsigned __int64 or unsigned long long	int/long
	float	float
	double	float
	long double	float
	char * (NUL terminated)	string or None
	wchar_t * (NUL terminated)	unicode or None
	void *	int/long or None

//C++文件

#include
     
      using namespace std;//该文件名称：cpptest.cpp//终端下编译指令：//g++ -o cpptest.so -shared -fPIC cpptest.cpp//-o 指定生成的文件名，-shared 指定微共享库，-fPIC 表明使用地址无关代码extern "C"{
   //在extern “C”中的函数才能被外部调用    int test(int int_test,char char_test,char *test_string,int int_arr[4],char char_arr2[2][2]) {        cout<<"输出参数中的int型:";        cout<
      
       <
      
     

 

//py文件

import ctypesmylib = ctypes.cdll.LoadLibrary("cpptest.so")char_p_test = bytes("中国","utf8")#汉字需用采用utf8编码int_arr4 = ctypes.c_int*4int_arr = int_arr4()int_arr[0] = 1int_arr[1] = 3int_arr[2] = 5int_arr[3] = 9char_arr2 = ctypes.c_char*2char_arr22 = char_arr2*2char_arr22a = char_arr22()char_arr22a[0][0] = b'a'char_arr22a[0][1]=  b'b'char_arr22a[1][0] = b'c'char_arr22a[1][1] = b'd'mylib.test(9999,'a',char_p_test,int_arr,char_arr22a)

 

 

参考：

 

结构体传参

https://www.jb51.net/article/52513.htm

 

 

https://www.programcreek.com/python/example/1243/ctypes.c_char_p