python 查找日志关键字

1、抓取出含有关键字”xiaoming”的行

2、在上一个问题的基础上，假设所在行的格式为location=xiaoming, value=xxx，请筛选出value值

#!/usr/bin/python3
# -*- coding: utf-8 -*
import re

# 定义日志文件
log_file = '/var/logs/test.log'
f = open(log_file, 'r+')
lines = f.readlines()

def print_log():
    # 查找关键字
    for line in lines:
        if "xiaoming" in line:
            line1 = line
            print(line1)

            # 查找value的值
            if 'location=xiaoming, value=' in line1:
                value = re.findall(r'value=(\w+)*', line1, re.M)
                print(value)

print_log()
f.close()