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将 .c 后缀的文件编译为动态库文件 ( .so 结尾)

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gcc c_dll.c -shared -o c_dll.so

在 python 文件中导入头文件

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from ctypes import *

在 python 中引入 c 动态库，并用变量接收动态库的引用

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result = cdll.LodaLibrary("./c_dll.so")

调用动态库方法

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result.my_add(num)

source code

c_dll.c

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#include<stdio.h>

void my_add(int num){

    long int result = 0;

    for (long int i=1; i<=num; i++){
        result += i;
    }
    printf("从1到%d累加的计算结果为%d\n",num,result);
}

c_add.py

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import time
from ctypes import *
def main():
    num = int(input("请输入整数值:"))
    result = 0
    start_time = time.time()

    result = cdll.LoadLibrary("./c_dll.so")
    result.my_add(num)

    end_time = time.time()

    print("总共用时%s"%(end_time-start_time))

if __name__ == "__main__":
    main()
# 10000000    总共用时0.03500175476074219

python_add.py

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import time

def main():
    num = int(input("请输入整数值:"))
    result = 0
    start_time = time.time()

    for i in range(num+1):
        result += i
    end_time = time.time()

    print("从1到%d累加的计算结果为%d"%(num,result))
    print("总共用时%s"%(end_time-start_time))

if __name__ == "__main__":
    main()
# 10000000    总共用时0.7695105075836182

作者：木子昭
链接：https://www.jianshu.com/p/edb8698d1374
來源：简书
著作权归作者所有。商业转载请联系作者获得授权，非商业转载请注明出处。

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