python——IPy庫 (2011-03-09 15:29)分類： pythonWebsite: https://github.com/haypo/python-ipy/安裝：easy_install IPy >>> from IPy import IP>>> dir(IP) ['__add__', '__cmp__', '__contains__', '__doc__', '__eq__', '__getitem__', '__hash__', '__init__', '__len__', '__lt__', '__module__', '__nonzero__', '__repr__', '__str__', '_getIPv4Map', '_printPrefix', 'broadcast', 'int', 'iptype', 'len', 'make_net', 'net', 'netmask', 'overlaps', 'prefixlen', 'reverseName', 'reverseNames', 'strBin', 'strCompressed', 'strDec', 'strFullsize', 'strHex', 'strNetmask', 'strNormal', 'version']>>> IP('172.29.20.80/28').len() —— IP數量16>>> IP('172.29.20.80/28').net() —— 網段 IP('172.29.20.80')>>> IP('172.29.20.80/28').netmask() —— 掩碼IP('255.255.255.240')>>> IP('172.29.20.0/24').prefixlen() —— 掩碼，INT型24>>> IP('172.29.20.0/24').strNormal(0) —— 網段'172.29.20.0'>>> IP('172.29.20.0/24').strNormal(1) —— 網段 + 掩碼'172.29.20.0/24'>>> IP('172.29.20.0/24').strNormal(2) —— 網段 + 掩碼'172.29.20.0/255.255.255.0'>>> IP('172.29.20.0/24').strNormal(3) —— 網段 + 掩碼'172.29.20.0-172.29.20.255'>>> IP('172.29.20.0/24').strNetmask() —— 掩碼'255.255.255.0'>>> IP('172.29.20.80/28').strNetmask() —— 掩碼'255.255.255.240'>>> IP('172.29.20.0/24').version() —— IP v4 or v6版本號碼4>>> '127.0.0.1' in IP('127.0.0.0/24')True>>> IP('127.0.0.0/24') in IP('127.0.0.0/25')False>>> print(IP('192.168.1.1').iptype())PRIVATE>>> print(IP('152.168.1.1').iptype()) PUBLIC>>> help(IP) —— 可以看到最詳細的文檔,更多的方法 >>> ip=IP('127.0.0.0/30')>>> for i in ip:... print(i)... 127.0.0.0127.0.0.1127.0.0.2127.0.0.3>>> for i in ip:... print(type(i))... <type 'instance'><type 'instance'><type 'instance'><type 'instance'>>>> print(ip)127.0.0.0/30>>> for i in ip: ... print(str(i))... 127.0.0.0127.0.0.1127.0.0.2127.0.0.3>>> print(ip[2])127.0.0.2>>> print(str(ip[2]))127.0.0.2 其他常用方法介紹： | __cmp__(self, other) —— 比較大小 | Called by comparison operations. | | Should return a negative integer if self < other, zero if self | == other, a positive integer if self > other. | | Networks with different prefixlen are considered non-equal. | Networks with the same prefixlen and differing addresses are | considered non equal but are compared by their base address | integer value to aid sorting of IP objects. | | The version of Objects is not put into consideration. | | >>> IP('10.0.0.0/24') > IP('10.0.0.0') | 1 | >>> IP('10.0.0.0/24') < IP('10.0.0.0') | 0 | >>> IP('10.0.0.0/24') < IP('12.0.0.0/24') | 1 | >>> IP('10.0.0.0/24') > IP('12.0.0.0/24') | 0 | __contains__(self, item) —— 檢查內含項目關聯性 | Called to implement membership test operators. | | Should return true if item is in self, false otherwise. Item | can be other IP-objects, strings or ints. | | >>> IP('195.185.1.1').strHex() | '0xc3b90101' | >>> 0xC3B90101 in IP('195.185.1.0/24') | True | >>> '127.0.0.1' in IP('127.0.0.0/24') | True | >>> IP('127.0.0.0/24') in IP('127.0.0.0/25') | False | overlaps(self, item) —— 檢查是否重疊 | Check if two IP address ranges overlap. | | Returns 0 if the two ranges don't overlap, 1 if the given | range overlaps at the end and -1 if it does at the beginning. | | >>> IP('192.168.0.0/23').overlaps('192.168.1.0/24') | 1 | >>> IP('192.168.0.0/23').overlaps('192.168.1.255') | 1 | >>> IP('192.168.0.0/23').overlaps('192.168.2.0') | 0 | >>> IP('192.168.1.0/24').overlaps('192.168.0.0/23') | -1
根據ip地址和子網路遮罩計算網段地址和廣播位址（原創） Python裡有一個專門處理該類問題的IP類庫，來看看：
view sourceprint?01 #! /usr/bin/env python
02
03 import sys
04 from IPy import IP
05
06 address = sys.argv[1]
07 netmask = sys.argv[2]
08
09 #print address,netmask
10
11 #help(IP)
12 networkAddress = IP(address).make_net(netmask) # init a IP instance, can with netmask directly, or use make_net(netmask)
13 bcastAddress = IP(networkAddress).broadcast() # return the broadcast ip address
14
15 print networkAddress
16 print bcastAddress
