python一分钟认识条件判断
对python判断ip是否可达的实例详解python中使用subprocess来使用shell
关于threading的用法
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from __future__ import print_functionimport subprocessimport threadingdef is_reachable(ip): if subprocess.call(["ping", "-c", "2", ip])==0:#只发送两个ECHO_REQUEST包 print("{0} is alive.".format(ip)) else: print("{0} is unalive".format(ip))if __name__ == "__main__": ips = ["www.baidu.com","192.168.0.1"] threads = [] for ip in ips: thr = threading.Thread(target=is_reachable, args=(ip,))#参数必须为tuple形式 thr.start()#启动 threads.append(thr) for thr in threads: thr.join() |
改良 ：使用Queue来优化（FIFO）
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from __future__ import print_functionimport subprocessimport threadingfrom Queue import Queuefrom Queue import Emptydef call_ping(ip): if subprocess.call(["ping", "-c", "2", ip])==0: print("{0} is reachable".format(ip)) else: print("{0} is unreachable".format(ip))def is_reachable(q): try: while True: ip = q.get_nowait()#当队列为空，不等待 call_ping(ip) except Empty: passdef main(): q = Queue() args = ["www.baidu.com", "www.sohu.com", "192.168.0.1"] for arg in args: q.put(arg) threads = [] for i in range(10): thr = threading.Thread(target=is_reachable, args=(q,)) thr.start() threads.append(thr) for thr in threads: thr.join()if __name__ == "__main__": main() |
以上这篇对python判断ip是否可达的实例详解就是小编分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持开心学习网。
原文链接：https://blog.csdn.net/csdn2798694115/article/details/79941619