本来想使用Python读取源文件，并使用正则表达式的方式过滤。过程中发现文件编码的问题老是搞不定，就先写个简易版本用于过滤日志文件中感兴趣的行，然后将结果输出到另一个文件中。

    功能：1、输入源文件路径；2、输入希望保存的文件路径; 3、输入希望过滤的词组，也就是满足这些词组中的任何一个都将视作匹配；

    源码如下：

#!/usr/bin/python # -*- coding: UTF-8 -*- import os #import re import time 'readTextFile.py--read and display text file' # 格式化成2016-03-20 11:45:39形式 #print time.strftime("%Y%m%d%H%M%S_log", time.localtime()) #get source file name while True:     fsrcname = raw_input('Please input the file to read:')     if not os.path.exists(fsrcname):         print "Error : '%s' isn't exists." % fsrcname     else:         print "success : '%s' is exists." % fsrcname         break while True:     fdestpath = raw_input('Please input the dest file path to output:')     if not os.path.isdir(fdestpath):         print "Error : '%s' isn't exists." % fdestpath     else:         print "success : '%s' is ok." % fdestpath         break filterstr = []   #word to match while True:     restr = raw_input('Please input the word to match for the lines in log,input :q to quit:')     if restr == ':q':         print "\r\n matching ...,please wait"         break     elif restr == '':         print "Please input valid word to match"     else:         filterstr.append(restr) all = [] try:     fobj = open(fsrcname,'r')     lines = fobj.readlines() except:     print("*** file open error" ) else: #display the contents of the file to the screen.     for eachline in lines:         for eachword in filterstr:             m = eachline.find(eachword)             # if m is not None:             if m >= 0:                 # print m.group()                 all.append(eachline)                 break     fobj.close() if all is not None:     destfilename = time.strftime("%Y%m%d%H%M%S", time.localtime())     destfilename = destfilename + '.log'     if fdestpath.endswith('\\') or fdestpath.endswith('/'):         fdestpath = fdestpath + destfilename     else:         fdestpath = fdestpath + '\\'+ destfilename     print "filter file complete, now the output the result to the '%s' " % fdestpath     try:         fobj = open(fdestpath,'w')     except:         print("*** file open error")     else:         #display the contents of the file to the screen.         for eachline in all:             fobj.writelines(eachline)         fobj.close()         print "file output success, filepath is '%s' " % fdestpath else:     print "filter file fail, no match "