python3利用ctypes传入一个字符串类型的列表方法

#include <stdio.h>

void get_str_list(int n, char *b[2])
{
 printf("in c start");
 for(int i=0;i<n;i++)
 {
  printf("%s", *(b+i));
  printf("\n");
 }
 printf("in c end");
}

gcc -o hello1.so -shared -fPIC c_p.c

from ctypes import *
ll = cdll.LoadLibrary
lib = ll("./12_23_ctype_list/hello1.so")
n = 3
str1 = c_char_p(bytes("nihao", 'utf-8'))
str2 = c_char_p(bytes("shijie", 'utf-8'))

a = (c_char_p*2)(str1, str2)
lib.get_str_list(2, a)

in c startnihao
shijie
in c end