python多線程的學習

0x00.前言

　　學了一下python的多線程，threading模塊

　　感受挺有意思的，隨便練手寫了一個很粗陋的windows下多線程掃在線ip的腳本

　　腳本沒什麼技術含量，純粹練手，掃一趟192的局域網要花個5分多鐘...主要是由於直接用的python調用system命令去ping...

0x01.代碼

# Author: 昏鴉

import os
import threading

def scan(lis):
    ip = "192.168.1.{}"
    for i in lis:
        res = ''.join(os.popen('ping -n 2 ' + ip.format(i)).readlines())
        pattern = "([\d]+)% 丟失"
        drop = re.search(pattern,res).group(1)
        if '沒法訪問' in res:
            continue
        else:
            if int(drop)< 51:
                print(ip.format(i))
            else:
                continue

if __name__ == '__main__':
    threads = []
    for i in range(5):
        t = threading.Thread(target=scan,args=(list(range(i*51,i*51+51)),))
        threads.append(t)
    for t in threads:
        t.start()
    for t in threads:
        t.join()