python提取log文件内容并画出图表

2019-11-25 12:28:17

字体：大中小

来源：转载

供稿：网友

之前在excel里面分析log数据，简直日了*了。现在用python在处理日志数据.

主要涉及 matplotlib，open和循环的使用。

日志内容大致如下

2016-10-21 21:07:59,787 [7 MainWindowForm]INFO: update time 136.63142016-10-21 21:07:59,908 [7 KinectServer]INFO: lClientSockets[0] elapsed time 16.2016-10-21 21:07:59,918 [7 KinectServer]INFO: lClientSockets[1] elapsed time 107.2016-10-21 21:07:59,929 [7 MainWindowForm]INFO: update time 135.13112016-10-21 21:08:00,039 [7 KinectServer]INFO: lClientSockets[0] elapsed time 14.2016-10-21 21:08:00,045 [7 KinectServer]INFO: lClientSockets[1] elapsed time 103.2016-10-21 21:08:00,053 [7 MainWindowForm]INFO: update time 118.1132

python处理代码

import matplotlib.pyplot as pltinput = open('serverlog.txt', 'r')rangeUpdateTime = [0.0]for line in input:  line = line.split()  if 'update' in line:    rangeUpdateTime.append(float(line[-1]))plt.figure('frame time')plt.subplot(211)plt.plot(rangeUpdateTime, '.r',)plt.grid(True)plt.subplot(212)plt.plot(rangeUpdateTime)plt.grid(True)plt.show()

结果