Finding local IP addresses using Python's stdlib

Question

How can I find local IP addresses (i.e. 192.168.x.x or 10.0.x.x) in Python platform independently and using only the standard library?

Answer 1

Well you can use the command "ip route" on GNU/Linux to know your current IP address.

This shows the IP given to the interface by the DHCP server running on the router/modem. Usually "192.168.1.1/24" is the IP for local network where "24" means the range of posible IP addresses given by the DHCP server within the mask range.

Here's an example: Note that PyNotify is just an addition to get my point straight and is not required at all

#! /usr/bin/env python

import sys , pynotify

if sys.version_info[1] != 7:
   raise RuntimeError('Python 2.7 And Above Only')       

from subprocess import check_output # Available on Python 2.7+ | N/A 

IP = check_output(['ip', 'route'])
Split_Result = IP.split()

# print Split_Result[2] # Remove "#" to enable

pynotify.init("image")
notify = pynotify.Notification("Ip", "Server Running At:" + Split_Result[2] , "/home/User/wireless.png")    
notify.show()    

The advantage of this is that you don't need to specify the network interface. That's pretty useful when running a socket server

You can install PyNotify using easy_install or even Pip:

easy_install py-notify

or

pip install py-notify

or within python script/interpreter

from pip import main

main(['install', 'py-notify'])