ctypes是傳統的加速方式，先用c++或者c將代碼編譯為動態庫，由ctypes來進行調用。

c++樣例代碼    count.cc

#include <iostream>
#include<iomanip>
#include<time.h>
using namespace std;

extern "C" int count(int n){
    int ans = 0;
    for( int i = 0; i <= n; i+=1 ){
        ans = ans + 1;
    }
    return ans;
}

運行g++ -o count.so -shared -fPIC count.cc -O2 生成動態庫

python3調用測試代碼

from ctypes import *
ctype_handel = cdll.LoadLibrary("./count.so")
print(ctype_handel.count(c_int(9999)))