python多进程编程

发布时间:2019-08-09 10:34:13编辑:auto阅读(1502)

    最近开始学习PYTHON编程语言,详细参照《python绝技运用Python成为顶级***》。在学习过程第一章节中,编写破解LINUX shadow文件时,想利用多线程加快破解速度。主机运行环境为WINDOWS下的VM WORKSTATION上的一台虚拟机,运行多线程代码后并无任何速度上的提升,并且经常伴随输出混乱,不知所以然。故还是利用多进程编写了一个简单的脚本文件,代码如下:

    import crypt
    import multiprocessing
    import time
    import sys
    def check(passwd):
            cryptWord=crypt.crypt(passwd.strip('\n'),salt.strip('\n'))
            if cryptWord==linuxWord:
                    print "password is : "+passwd
                    print "harked,time now is :"+currtime()
            else:
                    pass

    def worker(q):
            while not q.empty():
                    passwd =q.get()
                    try:
                            check(passwd)
                    finally:
                            q.task_done()

    def currtime():
            return time.ctime()

    def txtToArray(DesFilePath):
            desDic=open(DesFilePath,'r')
            passwdlist=[]
            for line in desDic.readlines():
                    passwdlist.append(line)
            return passwdlist

    if __name__=='__main__':
            global salt,linuxWord
            print "start time is :"+currtime()
            q=multiprocessing.JoinableQueue()
            linuxWord="$6$9CfIODlW$c34lcX4eYVCD9Kyer3kQLcM6o8Q7uryUroT/K0WVSnnqxtGbPJGDRGymJy4gVMnYgLUjc1J5wVEkrm/jxsQ.i"
            salt="$6$9CfIODl$"
            DesFilePath="/script/1/1.15/password.txt"
            passwdlist=txtToArray(DesFilePath)
            map(q.put,passwdlist)
            jobs=[multiprocessing.Process(target=worker,args=(q,)) for i in xrange(10)]
            map(lambda x:x.start(),jobs)
            q.join()
            print "end time is :"+currtime()


    运行效率比多线程要快很多

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