python使用正则表达式抽取文件中的IP地址

Posted 2021-06-28 Data+Science+Insight

python使用正则表达式抽取文件中的IP地址

 

 

IP正则

r\'(\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}\\.\\d{1,3})\'

 

有效IP

((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]?)

#

# importing the module
import re

# opening and reading the file
with open(\'test2.txt\') as fh:
string = fh.readlines()

# declaring the regex pattern for IP addresses
pattern =re.compile(\'\'\'((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]?)\'\'\')

# initializing the list objects
valid =[]
invalid=[]

# extracting the IP addresses
for line in string:
	line = line.rstrip()
	result = pattern.search(line)

	# valid IP addresses
	if result:
	va