Python netstat无法与popen一起正常工作

使用Python运行此命令时

p = Popen(['netstat', '-atunp'], shell=True, stdout=PIPE, stderr=PIPE)
stdout, stderr = p.communicate()
print stdout

我得到了不同的输出。也就是说，如果我从命令行运行相同的命令，我可以看到IP地址和应用程序名，而使用Python则不能

---

要查看IP地址和应用程序名称，我还需要做些什么吗？

我想我在没有

-p

标志的情况下运行了您的命令。此标志需要一个协议。这可能就是标准输出字符串为空的原因<另一方面，code>stderr会出现以下错误-

In [86]: stderr
Out[86]: 'netstat: option requires an argument -- p\nUsage:\tnetstat [-AaLlnW] [-f address_family | -p protocol]\n\tnetstat [-gilns] [-f address_family]\n\tnetstat -i | -I interface [-w wait] [-abdgRt]\n\tnetstat -s [-s] [-f address_family | -p protocol] [-w wait]\n\tnetstat -i | -I interface -s [-f address_family | -p protocol]\n\tnetstat -m [-m]\n\tnetstat -r [-Aaln] [-f address_family]\n\tnetstat -rs [-s]\n\n'

因此，像这样更新您的命令（删除

shell=True

并添加协议作为参数）——

---

您能向我们展示您得到的输出吗？drop

shell=True

。请参见问题中的

打印标准输出

。据我所知，问题可能与此类似，OP希望netstat输出像他在命令行上看到的那样进行修饰。基于新行进行拆分，得到与终端相同的输出。否。这是不对的

stdout

是一个字符串（可能包含嵌入的换行符（

'\n'

字符））

stdout.split（'\n'）

返回Python列表。您看到的输出是

repr（The_list）

，这不是终端将显示的内容。同意这不是终端将显示的内容。我是在评论一部分，其中一个很好的值列表比视觉上混乱的字符串更有意义。@J.F.Sebastian更新了答案。你怎么认为？

In [87]: paste
p = Popen(['netstat', '-atunp', 'tcp'], stdout=PIPE, stderr=PIPE)
stdout, stderr = p.communicate()
print stdout

## -- End pasted text --
Active Internet connections (including servers)
Proto Recv-Q Send-Q  Local Address          Foreign Address        (state)    
tcp4       0      0  192.168.1.100.53076    198.252.206.140.80     ESTABLISHED
tcp4       0      0  192.168.1.100.53075    198.252.206.140.80     ESTABLISHED
tcp4       0      0  192.168.1.100.53004    216.58.220.3.443       ESTABLISHED
tcp4       0      0  192.168.1.100.52984    74.125.200.155.443     ESTABLISHED
tcp4       0      0  192.168.1.100.52954    198.252.206.149.443    ESTABLISHED
tcp4       0      0  192.168.1.100.52927    91.189.89.222.443      FIN_WAIT_1 
tcp4       0      0  192.168.1.100.52925    173.194.120.144.443    ESTABLISHED
tcp4       0      0  192.168.1.100.52869    74.125.130.155.443     ESTABLISHED
tcp4       0      0  192.168.1.100.52863    74.125.68.139.443      ESTABLISHED
tcp4       0      0  192.168.1.100.52858    74.125.130.102.443     ESTABLISHED
tcp4       0      0  192.168.1.100.52851    74.125.68.93.443       ESTABLISHED
tcp4       0      0  192.168.1.100.52847    74.125.200.132.443     ESTABLISHED
tcp4       0      0  192.168.1.100.52814    216.58.216.163.443     ESTABLISHED
tcp4       0      0  192.168.1.100.52812    74.125.68.189.443      ESTABLISHED
tcp4       0      0  192.168.1.100.52794    74.125.130.17.443      ESTABLISHED
tcp4       0      0  192.168.1.100.52793    198.252.206.149.443    ESTABLISHED
tcp4       0      0  192.168.1.100.52761    74.125.68.138.443      ESTABLISHED
tcp4       0      0  192.168.1.100.52737    74.125.68.132.443      ESTABLISHED
tcp4       0      0  192.168.1.100.52577    17.172.232.205.443     ESTABLISHED
tcp4       0      0  192.168.1.100.52571    74.125.130.188.443     ESTABLISHED
tcp6       0      0  fd9a:f3a0:3346:7.4488  *.*                    LISTEN     
tcp4       0      0  *.*                    *.*                    CLOSED     
tcp4       0      0  127.0.0.1.631          *.*                    LISTEN     
tcp6       0      0  ::1.631                *.*                    LISTEN