下面是IPv4的IP正则匹配表达式
import re#简单的匹配给定的字符串是否是ip地址,下面的例子它不是IPv4的地址,但是它满足正则表达式
if re.match(r"^(?:[0-9]{1,3}\.){3}[0-9]{1,3}$", "272.168,1,1"):
print "IP vaild"
else:
print "IP invaild"
#精确的匹配给定的字符串是否是IP地址
if re.match(r"^(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$", "223.168.1.1"):
print "IP vaild"
else:
print "IP invaild"
#简单的从长文本中提取中提取ip地址
string_ip = "is this 289.22.22.22 ip ?
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"
#精确提取IP
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 ip"
下面是IPv6的正则匹配表达式
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
import reresults = re.findall('(?isu)<td>(\d+)\.(\d+)\.(\d+)\.(\d+)</td>\s*<td>(\d+)</td>', your_html)
for ip,port in results:
print '%s:%s'%(ip,port)