如何匹配文本文件中的两个模式

Question

如何匹配文本文件中的两个模式（选择包含“205”和“212”的两行），如下所示并获取它们。 现在我的代码是只得到一个模式的结果。谢谢大家

pattern = re.compile(r"^\S+ \S+ \S+ ([205][212])\d+.*$")

我的文本文件

mpls switch-l2vc 10.123.143.209 205316002 tunnel-policy TE between 10.123.130.1 205316004 tunnel-policy TE backup 10.123.130.2 205316004 tunnel-policy TE encapsulation vlan
mpls switch-l2vc 10.124.17.165 205315402 tunnel-policy TE between 10.123.130.1 205315404 tunnel-policy TE backup 10.123.130.2 205315404 tunnel-policy TE encapsulation vlan
mpls switch-l2vc 10.124.18.113 212359002 tunnel-policy TE between 10.123.130.1 205359004 tunnel-policy TE backup 10.123.130.2 205359004 tunnel-policy TE encapsulation vlan
mpls switch-l2vc 10.124.17.161 212315002 tunnel-policy TE between 10.123.130.1 205315004 tunnel-policy TE backup 10.123.130.2 205315004 tunnel-policy TE encapsulation vlan
mpls switch-l2vc 10.124.17.168 205315702 tunnel-policy TE between 10.123.130.1 205315704 tunnel-policy TE backup 10.123.130.2 205315704 tunnel-policy TE encapsulation vlan

Answer 1

你需要

^\S+ \S+ \S+ (?:205|212)\d.*$

见regex demo详细信息：

• ^-字符串的开头
• \S+ \S+ \S+-三个单空格分隔的单词
• (?:205|212)-要么{}要么{}
• \d-位
• .*$行的其余部分，字符串的结尾

Answer 2

尝试以下模式：(?=(^.*205))(?=(.*212.*$))|(?=(^.*212))(?=(.*205.*$))

代码：

import re

text = """
mpls switch-l2vc 10.123.143.209 205316002 tunnel-policy TE between 10.123.130.1 205316004 tunnel-policy TE backup 10.123.130.2 205316004 tunnel-policy TE encapsulation vlan
mpls switch-l2vc 10.124.17.165 205315402 tunnel-policy TE between 10.123.130.1 205315404 tunnel-policy TE backup 10.123.130.2 205315404 tunnel-policy TE encapsulation vlan
mpls switch-l2vc 10.124.18.113 212359002 tunnel-policy TE between 10.123.130.1 205359004 tunnel-policy TE backup 10.123.130.2 205359004 tunnel-policy TE encapsulation vlan
mpls switch-l2vc 10.124.17.161 212315002 tunnel-policy TE between 10.123.130.1 205315004 tunnel-policy TE backup 10.123.130.2 205315004 tunnel-policy TE encapsulation vlan
mpls switch-l2vc 10.124.17.168 205315702 tunnel-policy TE between 10.123.130.1 205315704 tunnel-policy TE backup 10.123.130.2 205315704 tunnel-policy TE encapsulation vlan
"""
pattern = "(?=(^.*205))(?=(.*212.*$))|(?=(^.*212))(?=(.*205.*$))"

print(re.findall(pattern, text, re.MULTILINE)

输出：

[('mpls switch-l2vc 10.124.18.113 212359002 tunnel-policy TE between 10.123.130.1 205359004 tunnel-policy TE backup 10.123.130.2 205', 'mpls switch-l2vc 10.124.18.113 212359002 tunnel-policy TE between 10.123.130.1 205359004 tunnel-policy TE backup 10.123.130.2 205359004 tunnel-policy TE encapsulation vlan'), ('mpls switch-l2vc 10.124.17.161 212315002 tunnel-policy TE between 10.123.130.1 205315004 tunnel-policy TE backup 10.123.130.2 205', 'mpls switch-l2vc 10.124.17.161 212315002 tunnel-policy TE between 10.123.130.1 205315004 tunnel-policy TE backup 10.123.130.2 205315004 tunnel-policy TE encapsulation vlan')]