Python中的命令输出解析
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Command output parsing in Python
提问by user2253876
I am trying to write a Python script on Windows 7, which reads the output of command ipconfig /displaydnsand try to get some values from the output.
我正在尝试在 Windows 7 上编写一个 Python 脚本，它读取命令的输出ipconfig /displaydns并尝试从输出中获取一些值。
The output of ipconfig /displaydns"is something like this,
的输出ipconfig /displaydns"是这样的，
Windows IP Configuration
9.a.c.e.x-0.19-430f5091.531.1518.1b8d.2f4a.210.0.k1m2t5a3245k242qmfp75spjkv.avts.
Record Name . . . . . : 9.a.c.e.x-0.19-430f5091.531.1518.1b8d.2f4a.210.0.k1m2t5a3245k242qmfp75spjkv.avts.
Record Type . . . . . : 1
Time To Live . . . . : 294
Data Length . . . . . : 4
Section . . . . . . . : Answer
A (Host) Record . . . : 127.0.0.16
I am taking this output and saving it in a variable as below,
我正在获取这个输出并将其保存在一个变量中，如下所示，
output = subprocess.check_output("ipconfig /displaydns", shell=True)
When I print "output" I get the following
当我打印“输出”时，我得到以下信息
b'\r\nWindows IP Configuration\r\n\r\n 9.a.c.e.x-0.19-430f5091.531.1518.1b8d.2f4a.210.0.k1m2t5a3245k242qmfp75spjkv.avts.\r\n ----------------------------------------\r\n Record Name . . . . . : 9.a.c.e.x-0.19-430f5091.531.1518.1b8d.2f4a.210.0.k1m2t5a3245k242qmfp75spjkv.avts.\r\n Record Type . . . . . : 1\r\n Time To Live . . . . : 289\r\n Data Length . . . . . : 4\r\n Section . . . . . . . : Answer\r\n A (Host) Record . . . : 127.0 .0.16\r\n\r\n\r\n'
From this output I am interested in the values for A (Host) Recordand Record Namewhich are 127.0.0.16and 9.a.c.e.x-0.19-430f5091.531.1518.1b8d.2f4a.210.0.k1m2t5a3245k242qmfp75spjkv.avts.respectively.
从这个输出我感兴趣的值A (Host) Record和Record Name它们127.0.0.16和9.a.c.e.x-0.19-430f5091.531.1518.1b8d.2f4a.210.0.k1m2t5a3245k242qmfp75spjkv.avts.分别。
How would I do it in Python?
我将如何在 Python 中做到这一点？
回答by Torxed
import subprocess
output = subprocess.check_output("ipconfig /displaydns", shell=True)
result = {}
for row in output.split('\n'):
if ': ' in row:
key, value = row.split(': ')
result[key.strip(' .')] = value.strip()
print(result)
print(result['A (Host) Record'])
gives:
给出：
{'A (Host) Record': '127.0 .0.16', 'Data Length': '4', 'Section': 'Answer', 'Record Name': '9.a.c.e.x-0.19-430f5091.531.1518.1b8d.2f4a.210.0.k1m2t5a3245k242qmfp75spjkv.avts.', 'Time To Live': '289', 'Record Type': '1'}
127.0 .0.16
Another solution would be to: (when i thought of this in my head, i thought it would be more compact.. it wasn't but anyway, it's a different way of calling the external command where you get control of the errors and output (you can differntiate the two))
另一个解决方案是：（当我在脑海中想到这一点时，我认为它会更紧凑......它不是，但无论如何，这是一种调用外部命令的不同方式，您可以在其中控制错误和输出（你可以区分两者））
import subprocess
cmdpipe = subprocess.Popen("ipconfig /displaydns", stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=True)
result = {}
for row in cmdpipe.stdout.readline():
if ': ' in row:
key, value = row.split(': ')
result[key.strip(' .')] = value.strip()
print(result)
print(result['A (Host) Record'])
