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)，并得到它们。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演示。详细信息

• ^ -字符串的开始
• \S+ \S+ \S+ -三一空格分隔词
• (?:205|212) - 205或212
• \d数字
• .*$行的其余部分，字符串的末尾。

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')]