Merging and sorting log files in Python

Question

I am completely new to python and I have a serious problem which I cannot solve.

I have a few log files with identical structure:

[timestamp] [level]         


        

Answer 1

You can do this

import fileinput
import re
from time import strptime

f_names = ['1.log', '2.log'] # names of log files
lines = list(fileinput.input(f_names))
t_fmt = '%a %b %d %H:%M:%S %Y' # format of time stamps
t_pat = re.compile(r'\[(.+?)\]') # pattern to extract timestamp
for l in sorted(lines, key=lambda l: strptime(t_pat.search(l).group(1), t_fmt)):
    print l,