Python正则表达式匹配和提取IP地址

import reif re.match(r"^(?:[0-9]{1,3}/.){3}[0-9]{1,3}$", "236.168.192.1"):  print "IP vaild" else:  print "IP invaild"

import reif re.match(r"^(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)/.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$", "236.168.192.1"):  print "IP vaild" else:  print "IP invaild"

import restring_ip = "is this 236.168.192.1 ip 12321"result = re.findall(r"/b(?:[0-9]{1,3}/.){3}[0-9]{1,3}/b", string_ip)if result:  print resultelse:  print "re cannot find ip"

import restring_ip = "is this 236.168.192.1 ip 12321"result = re.findall(r"/b(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)/.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)/b", string_ip)if result:  print resultelse:  print "re cannot find ipNo.2 IPv6string_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"^(?:[A-F0-9]{1,4}:){7}[A-F0-9]{1,4}$", 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"(?<![:./w])(?:[A-F0-9]{1,4}:){7}[A-F0-9]{1,4}(?![:./w])", string_IPv6, re.I)#打印提取结果print result