获取主机ip地址

import socket
import commands
def get_ip():
        hostname = socket.gethostname()
        #print(hostname)
        hostip = "127.0.0.1"
        try:
                hostip = socket.gethostbyname(hostname)   # 这个在linux 无法执行， 会走下面的cmd 来获取ip ， 但是在windows上这个命令执行，可以获取地址
                #print(hostip)
                return hostip
        except Exception,ex:      # 这个ex 在windows 上会报错
                print(ex)
        if "127.0.0.1" in hostip or not hostip:
                try:
                        cmd = "ifconfig|grep -v '127.0.0.1'|awk '{print $2}'|grep -oP '(\d+.\d+.\d+.\d+)'|head -1"
                        (status,output) = commands.getstatusoutput(cmd)
                except Exception,ex:
                        print(ex)
                        return hostip
                if output and ' ' not in output:
                        local_ip = output
                        return local_ip
        return hostip
hostip = get_ip()
print(hostip)