作为python的简单应用，这里将oracle日志文件中的报错内容截取出来。

方案构思：经过分析日志结果，以时间戳为楔子，两个时间戳之间内容作为分块，若果分块内存在报错内容，就将两个时间戳之间的分块内容打印出来。

1 import re 2  3 def get_time(week,tmp_file): 4     time = [] 5     for line in tmp_file: 6         tmp_line = line.split() 7         lens = len(tmp_line) 8         #print(lens) 9         if lens > 3 :10             if (tmp_line[0] in  week[:]) and (int(tmp_line[2]) in range(1,32)):11                 time.append(line.strip())12     return time13 14 def get_logs(time,filetxt):15     i= 016     n = i+117     while i < len(time)-1 :18         while time[i] == time[n]:19             n +=120             if n == len(time)-1:21                 break22         pattern = re.compile( time[i]+'(.*?)'+time[n],re.S)23         result = re.findall(pattern,filetxt)24         seltxt = result[0]25         if "ORA-" in seltxt or "Errors" in seltxt or "error" in seltxt or "TNS-" in seltxt:26             print('\n\n===>>报错起始时间:', time[i])27             print(''.join(result))28             # print(type(result))29             print('<<===报错终止始时间:', time[n])30         i = n31 32 def main():33     logfile = r'D:\WorkHome\python\oracle\alert_irmsdb.log'34     week = ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun']35     file = open(logfile)36     filelines = file.readlines()37     tmp_file = filelines[-200:]38     time = get_time(week,tmp_file)39     filetxt = "".join(tmp_file).strip()40     get_logs(time,filetxt)41 42 if __name__ == '__main__':43     main()