使用正则表达式从文本中提取数字 - Python 示例

使用正则表达式\s+(\d+)$可以从文本数据中提取出数字6644。

具体代码如下：

import re

data = "\nTCP\t127.0.0.1:5037\t\t0.0.0.0:0\t\t\tLISTENING\t\t6644\nTCP\t127.0.0.1:5037\t\t127.0.0.1:5589\t\tTIME_WAIT\t\t0\nTCP\t127.0.0.1:5037\t\t127.0.0.1:5590\t\tTIME_WAIT\t\t0\nTCP\t127.0.0.1:5037\t\t127.0.0.1:5593\t\tTIME_WAIT\t\t0\nTCP\t127.0.0.1:5037\t\t127.0.0.1:5594\t\tTIME_WAIT\t\t0\nTCP\t127.0.0.1:5037\t\t127.0.0.1:5598\t\tTIME_WAIT\t\t0\nTCP\t127.0.0.1:5037\t\t127.0.0.1:5599\t\tTIME_WAIT\t\t0\n"

pattern = r"\s+(\d+)$"
matches = re.findall(pattern, data, re.MULTILINE)

if matches:
\tprint(matches[0])
else:
\tprint("No match found.")

输出结果为：

6644