Python正则表达式匹配和提取IP地址

import re
if re.match(r"^(", "236.168.192.1"):
  print "IP vaild"
 else:
  print "IP invaild"

import re
if re.match(r"^(", "236.168.192.1"):
  print "IP vaild"
 else:
  print "IP invaild"

import re
string_ip = "is this 236.168.192.1 ip 12321"
result = re.findall(r"\b(", string_ip)
if result:
  print result
else:
  print "re cannot find ip"

import re
string_ip = "is this 236.168.192.1 ip 12321"
result = re.findall(r"\b(", string_ip)
if result:
  print result
else:
  print "re cannot find ipNo.2 IPv6
string_IPv6="1050:0:0:0:5:600:300c:326b"
#匹配是否满足IPv6格式要求,请注意例子里大小写不敏感
if re.match(r"^(", string_IPv6, re.I):
  print "IPv6 vaild"
else:
  print "IPv6 invaild"
#提取IPv6，例子里大小写不敏感
result = re.findall(r"(", string_IPv6, re.I)
#打印提取结果
print result