如何在python中将对象解析为字符串？

Question

我有这个密码：

from subprocess import call
domain = input('input domain\n>>')
callme = 'whois %s ' % domain
data = call(callme, shell=True)

当我试着

print('TYPE OF DATA\n>>%s' % type(data))

它还给了我

<class 'int'>

我需要操纵返回，但我不能解析这个对象。我试过str（）和repr（），然后json.loads文件（）但这些都不适合我

Answer 1

您拥有流程的退出代码。参见^{} documentation：

Run the command described by args. Wait for command to complete, then return the returncode attribute.

对于链接的returncode条目：

The child return code, set by poll() and wait() (and indirectly by communicate()).

如果期望进程在stdout上生成输出，则应使用^{}，并将stdout设置为subprocess.PIPE，以便用Python读取该输出：

import subprocess

callme = 'whois %s ' % domain
proc = subprocess.run(callme, shell=True, stdout=subprocess.PIPE)
data = proc.stdout

这将为您提供一个bytes对象；您可以设置text=True以获得解码的字符串值。你知道吗

演示：

>>> import subprocess
>>> proc = subprocess.run('whois stackoverflow.com', shell=True, stdout=subprocess.PIPE)
>>> proc.stdout.partition(b'\n')[0]
b'% IANA WHOIS server'
>>> proc = subprocess.run('whois stackoverflow.com', shell=True, stdout=subprocess.PIPE, text=True)
>>> print(*proc.stdout.splitlines()[57:74], sep='\n')
   Domain Name: STACKOVERFLOW.COM
   Registry Domain ID: 108907621_DOMAIN_COM-VRSN
   Registrar WHOIS Server: whois.name.com
   Registrar URL: http://www.name.com
   Updated Date: 2018-01-11T17:50:25Z
   Creation Date: 2003-12-26T19:18:07Z
   Registry Expiry Date: 2019-02-02T11:59:59Z
   Registrar: Name.com, Inc.
   Registrar IANA ID: 625
   Registrar Abuse Contact Email: abuse@name.com
   Registrar Abuse Contact Phone: 7202492374
   Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
   Name Server: NS-1033.AWSDNS-01.ORG
   Name Server: NS-358.AWSDNS-44.COM
   Name Server: NS-CLOUD-E1.GOOGLEDOMAINS.COM
   Name Server: NS-CLOUD-E2.GOOGLEDOMAINS.COM
   DNSSEC: unsigned