如何使用Python获取默认网关IP？

Question

I want to get the IP of the default gateway (internal router IP) using Python. I'm really new to Python so not sure how this works.

I know you can get the IP of your machine with:

import socket
internal_ip = socket.gethostbyname(socket.gethostname())
print internal_ip

So I'm thinking it must be something similar?

Answer 1

On Windows, you should use WMI along with proper query to lookup properties of an object (eg network devices). The following Python code prints IPv4 and default gateway addresses on my Windows 7 machine:

Code:

import wmi

wmi_obj = wmi.WMI()
wmi_sql = "select IPAddress,DefaultIPGateway from Win32_NetworkAdapterConfiguration where IPEnabled=TRUE"
wmi_out = wmi_obj.query( wmi_sql )

for dev in wmi_out:
    print "IPv4Address:", dev.IPAddress[0], "DefaultIPGateway:", dev.DefaultIPGateway[0]

Output:

IPv4Address: 192.168.0.2 DefaultIPGateway: 192.168.0.1

You can find more details and tricks of performing WMI operations on network devices on this page .

For Linux, PyNetInfo as suggested on this page would be a good approach. Although on Linux you can get around having to depend on an additional module by reading PROC entries among other import os; os.system(...) import os; os.system(...) tricks.