python访问纯真IP数据库的代码
通过IP地址判断客户端是网通的还是电信的。
使用一个纯文本的IP纯真数据库,用Python写了一个小程序。
核心代码:
核心代码:
- #!/usr/bin/env python
- #site www.jbxue.com
- #
- # -*- coding: utf-8 -*-
- from bisect import bisect
- _LIST1, _LIST2 = [], []
- _INIT = False
- ip2int = lambda ip_str: reduce(lambda a, b: (a << 8) + b, [int(i) for i in ip_str.split('.')])
- def _init():
- global _LIST, _INIT
- if not _INIT:
- for l in open('ipdata.txt', 'rb'):
- ip1, ip2 = l.split()[:2]
- addr = ' '.join(l.split()[2:])
- ip1, ip2 = ip2int(ip1), ip2int(ip2)
- _LIST1.append(ip1)
- _LIST2.append((ip1, ip2, addr))
- _INIT = True
- def ip_from(ip):
- _init()
- i = ip2int(ip)
- idx = bisect(_LIST1, i)
- assert(idx > 0)
- if len(_LIST1) <= idx:
- return u'unknown ip address %s' % ip
- else:
- frm, to ,addr = _LIST2[idx - 1]
- if frm <= i <= to:
- return addr
- else:
- return u'unknown ip address %s' % ip
- if __name__ == '__main__':
- print ip_from('115.238.54.106')
- print ip_from('220.181.29.160')
- print ip_from('115.238.54.107')
- print ip_from('8.8.8.8')