你可以通过itertools和operator函数,我是一个alos学习者,我从我的一个帖子的ans中借用了代码,但是我收集了一些关于这两个函数的细节,希望这两个功能都有用。
itertools.groupby(iterable,key=none或some func)
获取iterables列表,并根据指定的键对其进行分组。
键指定要应用于每个iterable的操作,然后将其结果用作每个项目分组的标题;
最终具有相同“key”值的项将在同一组中结束。
返回值是一个类似于字典的iterable,其形式为key:value。
operator.itemgetter(n)
构造一个假定可iterable对象(例如list、tuple、set)作为输入的可调用对象,并从中提取第n个元素。
operator.itemgetter(n)
将提供:一个从类似列表的对象中获取项的函数。
像operator.itemgetter(3)从列表中获取第三个项目。
更准确地说,这些是可调用的,而不是函数,但这是一个经常被忽略的区别。
以下代码适用于您:
import itertools
import operator
log_list = []
file = open('file')
for line in file:
loggs = line.strip().split()
log_list.append(loggs)
key = operator.itemgetter(3)
# this step is only required if the list is not sorted by the key
log_list.sort(key=key)
for index, logs in itertools.groupby(log_list, key):
print(index)
for log in logs:
print(" " + " ".join(log))
print("")
以上代码的结果,我拿了你的文件进行测试。
anujv
Jul 17 04:34:08 anujv kernel: nfs: server hpstor003 not responding, still trying
hw060
Jul 18 15:46:02 hw060 kernel: nfs: server hpstor001 not responding, still trying
hw067
Jul 18 14:30:02 hw067 kernel: nfs: server hpstor002 not responding, still trying
Jul 18 23:47:45 hw067 kernel: nfs: server hpstor001 not responding, still trying
Jul 18 23:48:48 hw067 kernel: nfs: server hpstor001 not responding, still trying
Jul 18 23:49:51 hw067 kernel: nfs: server hpstor001 not responding, still trying
hw068
Jul 18 17:17:10 hw068 kernel: nfs: server hpstor002 not responding, still trying
Jul 19 00:46:43 hw068 kernel: nfs: server hpstor001 not responding, still trying
Jul 19 00:48:49 hw068 kernel: nfs: server hpstor001 not responding, still trying
hw069
Jul 19 00:50:01 hw069 kernel: nfs: server hpstor001 not responding, still trying
Jul 19 00:51:16 hw069 kernel: nfs: server hpstor001 not responding, still trying
Jul 19 00:52:52 hw069 kernel: nfs: server hpstor001 not responding, still trying
Jul 18 22:13:20 hw069 kernel: nfs: server hpstor001 not responding, still trying
hw070
Jul 18 22:13:20 hw070 kernel: nfs: server hpstor001 not responding, still trying
Jul 18 22:17:26 hw070 kernel: nfs: server hpstor002 not responding, still trying
hw071
Jul 18 20:16:21 hw071 kernel: nfs: server hpstor002 not responding, still trying
Jul 18 20:17:24 hw071 kernel: nfs: server hpstor002 not responding, still trying
Jul 18 20:18:27 hw071 kernel: nfs: server hpstor002 not responding, still trying
hw073
Jul 18 20:43:07 hw073 kernel: nfs: server hpstor002 not responding, still trying
hw074
Jul 18 15:45:59 hw074 kernel: nfs: server hpstor001 not responding, still trying
Jul 18 17:17:12 hw074 kernel: nfs: server hpstor002 not responding, still trying
Jul 19 01:20:20 hw074 kernel: nfs: server hpstor002 not responding, still trying
hw079
Jul 18 16:16:01 hw079 kernel: nfs: server hpstor001 not responding, still trying
Jul 19 00:17:56 hw079 kernel: nfs: server hpstor001 not responding, still trying
sanujv
Jul 17 21:18:42 sanujv kernel: nfs: server hpstor003 not responding, still trying
Jul 18 01:36:00 sanujv kernel: nfs: server hpstor003 not responding, still trying
Jul 18 04:16:10 sanujv kernel: nfs: server hpstor003 not responding, still trying
