识别有效的IP地址和掩码并进行分类统计.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-
# @Time    : 2019/9/4 20:55
# @Author  : SeniorZhu1994
# @Email   : SeniorZhu1994@
# @Site    : 
# @File    : 识别有效的IP地址和掩码并进行分类统计.py
# @Software: PyCharm
# @Describe: 

def check_ip(ip):
    if len(ip) !=4 and '' in ip:
        return False
    else:
        for i in range(4):
            try:
                if int(ip[i])<0 or int(ip[i])>255:
                    return False
            except:
                return False
        else:
            return True
def check_mask(ms,lll):
    if len(ms) != 4:
        return False
    if ms[0] == '255':
        if ms[1] == '255':
            if ms[2] == '255':
                if ms[3] in lll:
                    return True
                else:
                    return False
            elif ms[2] in lll and ms[3] == '0':
                return True
            else:
                return False
        elif ms[1] in lll and ms[2] == ms[3] == '0':
            return True
        else:
            return False
    elif ms[0] in lll and ms[1] == ms[2] == ms[3] == '0':
        return True
    else:
        return False

if __name__ == '__main__':
    lll = ['254', '252', '248', '240', '224', '192', '128', '0']
    A = 0
    B = 0
    C = 0
    D = 0
    E = 0
    err = 0
    pri = 0
    while True:
        string = input().strip()
        if string == "":
            break
        list1 = string.split("~")[0]
        list2 = string.split("~")[1]
        ip = list1.split('.')
        ms = list2.split('.')
        if check_mask(ms,lll) and check_ip(ip):
            if 1 <= int(ip[0]) <= 126:
                A += 1
            if 128 <= int(ip[0]) <= 191:
                B += 1
            if 192 <= int(ip[0]) <= 223:
                C += 1
            if 224 <= int(ip[0]) <= 239:
                D += 1
            if 240 <= int(ip[0]) <= 255:
                E += 1
            if int(ip[0]) == 10 or (int(ip[0]) == 172 and 15 < int(ip[1]) < 32) or (int(ip[0]) == 192 and int(ip[1]) == 168):
                pri += 1
        else:
            err += 1
    print("%s %s %s %s %s %s %s" % (A, B, C, D, E, err, pri))