Python正则表达式匹配和提取IP地址


						Linux

No.1 IPv4

下面是IPv4的IP正则匹配实例:

简单的匹配给定的字符串是否是ip地址





import re

if re.match(r"^(?:[0-9]{1,3}\.){3}[0-9]{1,3}$", "236.168.192.1"):

  print "IP vaild"

 else:

  print "IP invaild"



精确的匹配给定的字符串是否是IP地址







import re

if 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"



简单从长文本中提取IP







import re

string_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 result

else:

  print "re cannot find ip"



精准提取IP







import re

string_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 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"^(?:[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



总结

以上所述是小编给大家介绍的Python正则表达式匹配和提取IP地址，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对中文源码网网站的支持！