标签：ip地址 python return 十进制 cover
IP地址与十进制IP转换
#!/usr/bin/env python
#encoding=utf-8
import re
import sys
import os
def ten_to_two(ten_num):
two_str = ‘‘
while ten_num != 1:
a = ten_num % 2
two_str = two_str + str(a)
ten_num = ten_num / 2
else:
two_str = two_str + str(1)
two_str = two_str[::-1]
if len(two_str) < 8:
cover = (8 - len(two_str)) * str(0)
two_str = cover + two_str
return two_str
def two_to_ten(two_num):
ten_int = 0
indexlist = range(len(two_num))
for i in indexlist:
ten_int += int(two_num[i]) * 2 ** indexlist[-(i+1)]
return str(ten_int)
def int_to_ipaddr(intnum):
int_addr = int(intnum)
twonum = ten_to_two(int_addr)
if len(twonum) < 32:
twonum = ‘0‘ * (32 - len(twonum)) + twonum
ipaddr = ‘‘
for j in range(0, 32, 8):
k = j + 8
if j == 24:
ipaddr += two_to_ten(twonum[j:k])
else:
ipaddr += two_to_ten(twonum[j:k]) + ‘.‘
return ipaddr
def ipaddr_to_int(ipaddress):
iplist = ipaddress.split(‘.‘)
ipstr = ‘‘
for i in iplist:
ipstr += ten_to_two (int(i))
if ipstr.startswith(‘0‘):
ipstr = re.sub(‘^0*‘, ‘‘, ipstr)
tennum = two_to_ten(ipstr)
return tennum
if len(sys.argv) < 2:
print ‘No action specified.‘
sys.exit()
elif len(sys.argv) == 2:
if sys.argv[1].startswith(‘--‘):
option = sys.argv[1][2:]
if option == ‘version‘:
print ‘Version 1.1‘
elif option == ‘help‘:
print ‘‘‘\
This program is used to convert the IP address.
\t-i ipaddress\n\t\tConvert the IP address.
\t\tlike ./iptrans.py 192.168.1.1
\t-if filename\n\t\tConvert the IP address‘s file.
\t\tlike ./iptrans.py ./ipfile
\t-t int ipaddress\n\t\tConvert the int IP address.
\t\tlike ./iptrans.py 3232235777
\t-tf filename\n\t\tConvert the IP address‘s file.
\t\tlike ./iptrans.py ./intipfile
\t--help\n\t\tDisplay this help.
\t--version\n\t\tPrints the version number.‘‘‘
else:
print ‘Unknown option.‘
sys.exit()
elif len(sys.argv) == 3:
if sys.argv[1].startswith(‘-‘):
option = sys.argv[1][1:]
if option == ‘i‘:
if sys.argv[2].count(‘.‘) == 3:
ipaddress = sys.argv[2]
intkey = ipaddr_to_int(ipaddress)
print ‘%s\t%s‘ % (ipaddress, intkey)
else:
print ‘%s is error.‘ % sys.argv[2]
sys.exit()
elif option == ‘if‘:
if os.path.isfile(sys.argv[2]) == True:
filename = sys.argv[2]
f = open(filename, ‘r‘)
for line in f:
ipaddress = line.replace(‘\n‘, ‘‘)
intkey = ipaddr_to_int(ipaddress)
print ‘%s\t%s‘ % (ipaddress, intkey)
else:
print ‘The %s is not exist.‘ % sys.argv[2]
sys.exit()
elif option == ‘t‘:
intkey = sys.argv[2]
if int(intkey) < 16777217:
print ‘%s is error, must be great than 16777217‘ % sys.argv[2]
else:
ipaddress = int_to_ipaddr(intkey)
print ‘%s\t%s‘ % (intkey, ipaddress)
elif option == ‘tf‘:
if os.path.isfile(sys.argv[2]) == True:
filename = sys.argv[2]
f = open(filename, ‘r‘)
for line in f:
intkey = line.replace(‘\n‘, ‘‘)
ipaddress = int_to_ipaddr(intkey)
print ‘%s\t%s‘ % (intkey, ipaddress)
else:
print ‘The %s is not exist.‘ % sys.argv[2]
sys.exit()
else:
print ‘Unknown option.‘
sys.exit()
else:
print ‘Unknown option.‘
sys.exit()
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标签：ip地址 python return 十进制 cover
原文地址：http://gongniue.blog.51cto.com/7073997/1825854
