Python中的命令输出解析

Question

我试图在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.

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

我正在获取此输出并将其保存在变量中,如下所示,

output = subprocess.check_output("ipconfig /displaydns", shell=True)

当我打印"输出"时,我得到以下内容

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'

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.

我怎么用Python做的？

Answer 1

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'])

得到:

{'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

另一个解决方案是:(当我想到这一点时,我认为它会更紧凑..它不是,但无论如何,它是一种不同的方式调用外部命令,你可以控制错误和输出(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'])