不确定这个问题的标题是否正确，所以让我提供一些背景信息。我有两个文本文件。一个称为data.txt，另一个称为results.txt。在数据文件中，我有 Cisco 网络设备上“显示版本”的结果。它如下所示：
Cisco IOS Software, s72033_rp Software (s72033_rp-ADVIPSERVICESK9_WAN-M), Version 12.2(33)SXI4, RELEASE SOFTWARE (fc3)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2010 by Cisco Systems, Inc.
Compiled Sat 29-May-10 17:54 by prod_rel_team
ROM: System Bootstrap, Version 12.2(17r)SX6, RELEASE SOFTWARE (fc1)
core-router uptime is 2 years, 5 weeks, 1 day, 5 hours, 47 minutes
Uptime for this control processor is 2 years, 5 weeks, 1 day, 4 hours, 50 minutes
Time since san-qrc1 switched to active is 2 years, 5 weeks, 1 day, 4 hours, 56 minutes
System returned to ROM by reload at 16:12:08 PDT Fri Aug 27 2010 (SP by reload)
System restarted at 16:19:33 PDT Fri Aug 27 2010
System image file is "sup-bootdisk:s72033-advipservicesk9_wan-mz.122-33.SXI4.bin"
Last reload reason: Reload Command
This product contains cryptographic features and is subject to United
States and local country laws governing import, export, transfer and
use. Delivery of Cisco cryptographic products does not imply
third-party authority to import, export, distribute or use encryption.
Importers, exporters, distributors and users are responsible for
compliance with U.S. and local country laws. By using this product you
agree to comply with applicable laws and regulations. If you are unable
to comply with U.S. and local laws, return this product immediately.
A summary of U.S. laws governing Cisco cryptographic products may be found at:
http://www.cisco.com/wwl/export/crypto/tool/stqrg.html
If you require further assistance please contact us by sending email to
export@cisco.com.
cisco WS-C6509-E (R7000) processor (revision 1.5) with 983008K/65536K bytes of memory.
Processor board ID XXXXXXXXXX
SR71000 CPU at 600Mhz, Implementation 0x504, Rev 1.2, 512KB L2 Cache
Last reset from s/w reset
35 Virtual Ethernet interfaces
51 Gigabit Ethernet interfaces
26 Ten Gigabit Ethernet interfaces
1917K bytes of non-volatile configuration memory.
8192K bytes of packet buffer memory.
65536K bytes of Flash internal SIMM (Sector size 512K).
Configuration register is 0x2102
简单来说，就是我想读取data.txt，拉出某些字符串，放到results.txt中。CSV 格式会很好，但我很乐意只提取数据。
例如，脚本会提取相关数据，例如设备的主机名（在本例中为核心路由器）、系统映像文件名（s72033-advipservicesk9_wan-mz.122-33.SXI4.bin）、正常运行时间（2 年, 5 周, 1 天, 5 小时, 47 分钟), 序列号 (XXXXXXXX) 和型号 (WS-C6509-E)。所有这些信息将以制表符分隔的格式放入 results.txt 中。
将来，可以使用不同的 data.txt 文件，并将数据附加到 results.txt 中，为我提供数据点的运行统计。我希望这是有道理的。我尝试搜索我要查找的内容，但我发现的大多数内容要么是在文本文件中查找整行，要么是获取单词出现的索引号。
最后一件事：根据思科设备的型号，所有项目都会有所不同。它周围的单词通常是相同的，但我正在寻找的项目会有所不同。您能提供的任何帮助将不胜感激。提前致谢。
更新
我使用了您提供的脚本，但我仍然看到以下内容：
python
Python 2.7.3 (default, Aug 1 2012, 05:16:07)
[GCC 4.6.3] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> with open("data.txt") as infile:
... text = infile.read()
...
>>> import re
>>> regex = re.compile(
... r"""^(?P<device>\S*) # Match non-whitespace device name
... \suptime\sis\s # Match " uptime is "
... (?P<uptime>[^\r\n]*) # Match until end of line --> uptime
... .*?^System\simage\sfile\sis\s # Match intervening text
... "[^:]*: # Match from quote to colon
... (?P<sifilename>[^"]*) # Match everything until quote --> filename
... .*?^cisco\s # Match intervening text
... (?P<model>\S*) # Match non-whitespace model name
... .*?^Processor\sboard\sID\s # Match intervening text
... (?P<serialno>[^\r\n]*) # Match until end of line --> serial no""",
... re.DOTALL | re.MULTILINE | re.VERBOSE)
>>> match = regex.search(text)
>>> match.groups()
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
AttributeError: 'NoneType' object has no attribute 'groups'
问题是主机名缩进 1 个空格。当我粘贴它时，缩进消失了。但是，当发出“show version”命令时，会出现 1 个空格缩进。尝试运行上面的代码会破坏脚本。删除空间允许它工作。