正则表达式来查找搜索项并将结果放入另一个数据文件中？

Question

不确定这个问题的题目是否正确，所以让我给你一些背景资料。我有两个文本文件。一个叫数据.txt另一个打电话来结果.txt. 在数据文件中，我有一个思科网络设备“显示版本”的结果。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



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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

简单地说，我想读数据.txt把绳子拉出来放到结果.txt. 一个CSV格式会很好，但是我很乐意只提取数据。在

例如，该脚本将提取相关数据，如设备的主机名（在本例中是核心路由器）、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结果.txt. 在

在未来，不同数据.txt文件可以被利用，并且数据附加到结果.txt，给我一个连续的数据点统计。我希望这有道理。我尝试过搜索我要找的内容，但是我发现的大多数东西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。在

最后一件事：根据思科设备的型号，所有项目都会有所不同。它周围的字一般都是一样的，但我要找的东西会不同。如果您能提供任何帮助，我们将不胜感激。提前谢谢。在

更新

我使用了您提供的脚本，但我仍然看到以下内容：

^{pr2}$

问题是主机名缩进了1个空格。当我粘贴它时，压痕消失了。但是，当发出“show version”命令时，会出现1个空格缩进。尝试在上面运行代码会破坏脚本。移除空间可以让它工作。在

Answer 1

您可以将文件读入如下字符串：

with open("data.txt") as infile:
    text = infile.read()

然后可以使用正则表达式提取相关信息：

^{pr2}$

现在match.groups()包含：

^{3}$

您可以使用此命令写入csv文件，如下所示：

import csv
with open("results.txt", "a") as outfile:
    outcsv = csv.Writer(outfile)
    outcsv.writerow(match.groups())