IP地址排序

#!/usr/bin/python3
#-*- coding:utf8 -*-
import sys
import os
import socket

#编写环境 windows10 + Python3.5.3
# 在同一目录生成排序好的IP文件ip_newsort.txt
#输入如下 python3 ipsort.py ip.txt

iplist = []

def ipsort(iplist):
     #写文件
    with open('ip_newsort.txt','w') as file:
        for i in sorted(iplist,key=socket.inet_aton):
            print(i)
            file.writelines(i+"\n")
        #print(file)

def read_file(filename):
    #读取文件
    with open(filename,'r') as file:
        for line in file:
            iplist.append(line.rstrip('\n').rstrip('\n'))#清除格式转换成列表
    return iplist
    
def main():

    try:
        if len(sys.argv) != 2:
            print("Usage: %s %s" % (sys.argv[0],sys.argv[1]))
        else:
            # 判断文件路径是否存在，如果存在把文件全路径赋值给filename，否则直接退出
            if os.path.exists(sys.argv[1]):
                filename=sys.argv[1]
            else:
                print("%s is not exists!" % (sys.argv[1]))
                sys.exit(1)
        iplist=read_file(filename) #读取文件
        #print(iplist)
        ipsort(iplist)           #执行排序函数调用
      
    except Exception as e:
        print(e)
  
if __name__ == '__main__':
    main()

排序前：

排序后：