使用Python监测网络连接和网速

大家好，网络连接和网速在工作中非常重要，本文将介绍如何使用Python程序来监测互联网连接的速度和中断情况。

1.导入所需库文件

首先，需要导入以下库：

python 复制代码

import speedtest
import time
from datetime import datetime

这里选择了第三方库speedtest-cli来执行实际的下载和上传速度测试。

2.创建循环变量

然后，创建一个名为i的变量，并将其值设为True。

python 复制代码

i = True

这只是为了在主函数运行时保持循环，只要i为True，程序就会一直执行下去。

3.执行主要功能的函数

python 复制代码

def run_prog():
    print("Please wait while GPisc runs it's checks...\n")
    try:
        now = datetime.now()
        time_date = now.strftime("%d/%m/%Y %H:%M:%S")
        st = speedtest.Speedtest()
        server = st.get_best_server()
        server_location = server.get("name")
        host = server.get("host")
        dl_speed = st.download()
        ul_speed = st.upload()
        print(f'SERVER: {host} | LOCATION: {server_location}\n')
        with open('DL_LOG.txt', 'a') as log:
            log.writelines(f'{time_date} - DOWNLOAD SPEED: {dl_speed}\n')
        print(f'DOWNLOAD SPEED: {dl_speed}\n')
        with open('UL_LOG.txt', 'a') as log:
            log.writelines(f'{time_date} - UPLOAD SPEED: {ul_speed}\n')
        print(f'UPLOAD SPEED: {ul_speed}\n')
    except:
        with open('NO_NET_LOG.txt', 'a') as log:
            now = datetime.now()
            time_date = now.strftime("%d/%m/%Y %H:%M:%S")
            log.writelines(f'{time_date} - CONNECTION LOST!\n')
            print('CONNECTION LOST!\n')

上述代码是执行所有工作的函数。run_prog函数通过选择测试时的最佳服务器来运行下载和上传速度测试，然后将结果记录在3个.txt文件中 - DL_LOG.txt、UL_LOG.txt和NO_NET_LOG.txt。

4.结果记录和日志

日志中的数据如下所示：

python 复制代码

05/08/2022 23:18:52 - DOWNLOAD SPEED: 51351410.36969972
05/08/2022 23:20:14 - DOWNLOAD SPEED: 54115624.477457255
05/08/2022 23:21:31 - DOWNLOAD SPEED: 50422315.83706379
05/08/2022 23:22:53 - DOWNLOAD SPEED: 48712675.779672034
05/08/2022 23:18:52 - UPLOAD SPEED: 34615688.56533798
05/08/2022 23:20:14 - UPLOAD SPEED: 14661625.766184961
05/08/2022 23:21:31 - UPLOAD SPEED: 36268210.76668299
05/08/2022 23:22:53 - UPLOAD SPEED: 34678387.95052972
25/07/2022 21:17:30 - CONNECTION LOST!
25/07/2022 21:18:30 - CONNECTION LOST!
25/07/2022 21:19:31 - CONNECTION LOST!
25/07/2022 21:20:28 - CONNECTION LOST!

如上所示，这里没有将字节结果转换为Mbps，因为希望结果尽可能准确。如果需要，可以使用hurry.filesize 0.9（https://pypi.org/project/hurry.filesize/）来进行转换。

run_prog函数使用try和except来捕获除了速度结果之外的任何内容，这显然是没有连接的情况，因为如果无法连接到速度测试服务器，程序将失败，然后写入无连接日志。

python 复制代码

while i:
    run_prog()
    time.sleep(60)
    print('**********************************************\n')

上述代码执行run_prog函数，然后等待60秒再次运行（这就是为什么创建了i = True）。

程序在每次执行测试时都会在控制台打印输出。

5.主函数循环

以下是完整的脚本:

python 复制代码

import speedtest
import time
from datetime import datetime
i = True
def run_prog():
    print("Please wait while GPisc runs it's checks...\n")
    try:
        now = datetime.now()
        time_date = now.strftime("%d/%m/%Y %H:%M:%S")
        st = speedtest.Speedtest()
        server = st.get_best_server()
        server_location = server.get("name")
        host = server.get("host")
        dl_speed = st.download()
        ul_speed = st.upload()
        print(f'SERVER: {host} | LOCATION: {server_location}\n')
        with open('DL_LOG.txt', 'a') as log:
            log.writelines(f'{time_date} - DOWNLOAD SPEED: {dl_speed}\n')
        print(f'DOWNLOAD SPEED: {dl_speed}\n')
        with open('UL_LOG.txt', 'a') as log:
            log.writelines(f'{time_date} - UPLOAD SPEED: {ul_speed}\n')
        print(f'UPLOAD SPEED: {ul_speed}\n')
    except:
        with open('NO_NET_LOG.txt', 'a') as log:
            now = datetime.now()
            time_date = now.strftime("%d/%m/%Y %H:%M:%S")
            log.writelines(f'{time_date} - CONNECTION LOST!\n')
            print('CONNECTION LOST!\n')
while i:
    run_prog()
    time.sleep(60)
    print('**********************************************\n')