Question

我是Python的新手，我正在尝试编写一个脚本来提取日志的几行行的TimeStamps。

日志看起来像这样。

-----------------------------------------------
138976 2013-12-17 18:25:58.607 superman(759) Debug: {event} TUNE: IR Signal Received: Key Code: 104

138977 2013-12-17 18:25:58.616 mediamanager(763) Debug: {event} TUNE: Player Close Issued

138999 2013-12-17 18:25:58.683 mediamanager(763) Debug: {event} TUNE: Player Open Issued: atsc://fr783000000.256.10

139003 2013-12-17 18:25:58.688 mediamanager(763) Debug: {event} TUNE: Streamer Opened: atsc://fr783000000.256.10 SessionId=152 ProcessID=856

139014 2013-12-17 18:25:58.695 halserver(628) Debug: {event} TUNE: Frontend Locked: Tuner: 1

139030 2013-12-17 18:25:58.735 mediamanager(763) Debug: {event} TUNE: Player Play Issued: SessionId: 152


139133 2013-12-17 18:25:59.705 httpmediaserver(824) Debug: {event} TUNE: HTTP Request Received: HEAD /mediasession?producer_id=8&type=tune_live HTTP/1.1

139134 2013-12-17 18:25:59.757 halserver(628) Debug: {event} TUNE: New Picture Received

139136 2013-12-17 18:25:59.757 halserver(628) Debug: {event} TUNE: Video Is Visible
---------------------------------------

基本上，其间几乎没有其他不需要的线路。这里很少有线条随机出现，我正在寻找的是当Tune事件出现在这个序列中时提取数据。

任何人都可以对此有所了解。

提前致谢:-)

Answer 1

我仍然不确定你在问什么。您要么只想收集列表中的两个事件之间的时间戳，要么想要根据日志文件找出两个事件之间的时间？

import re

with open('my_log.txt') as my_log:
  a = [re.findall(r'\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}.\d{3}',
      line)[0] for line in my_log.readlines() if 'TUNE:' in line]
print a

如果您想要列表中的时间戳，请输出：

['2013-12-17 18:25:58.607', '2013-12-17 18:25:58.616',
 '2013-12-17 18:25:58.683', '2013-12-17 18:25:58.688',
 '2013-12-17 18:25:58.695', '2013-12-17 18:25:58.735',
 '2013-12-17 18:25:59.705', '2013-12-17 18:25:59.757',
 '2013-12-17 18:25:59.757']

如果您想知道第一个和最后一个事件之间的时间差异，请输出：

from dateutil import parser

t_delta = parser.parse(a[-1]) - parser.parse(a[0])
print t_delta #0:00:01.150000

Python：从两行之间的日志中提取时间戳

1 个答案: