Python中使用正则表达式
关键字： python ,正则表达式《Python unix与linux系统管理指南》学习笔记
Python中使用正则表达式，应该要养成创建编译后的正则表达式的习惯，使用方法如下：
源码打印？
[*]#!/usr/bin/env python
[*]
[*]import re
[*]
[*]def run_re():
[*] pattern = 'ERROR'
[*] re_obj = re.compile(pattern)
[*]
[*] infile = open('/home/udb/jt.txt', 'r')
[*] match_count = 0
[*] lines = 0
[*] for line in infile:
[*] match = re_obj.search(line)
[*] if match:
[*] match_count += 1
[*] lines += 1
[*] return (lines, match_count)
[*]
[*]if __name__ == "__main__":
[*] lines, match_count = run_re()
[*] print 'LINES--->', lines
[*] print 'MATCHES--->', match_count
常用的正则表达式方法有findall(), finditer(), match(), search()
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