Finding local IP addresses using Python's stdl

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

import netifaces as ni 

ni.ifaddresses('eth0')
ip = ni.ifaddresses('eth0')[ni.AF_INET][0]['addr']
print(ip)

This will return you the IP address in the Ubuntu system as well as MacOS. The output will be the system IP address as like my IP: 192.168.1.10.

Answer 2

You can use the netifaces module. Just type:

pip install netifaces

in your command shell and it will install itself on default Python installation.

Then you can use it like this:

from netifaces import interfaces, ifaddresses, AF_INET
for ifaceName in interfaces():
    addresses = [i['addr'] for i in ifaddresses(ifaceName).setdefault(AF_INET, [{'addr':'No IP addr'}] )]
    print '%s: %s' % (ifaceName, ', '.join(addresses))

On my computer it printed:

{45639BDC-1050-46E0-9BE9-075C30DE1FBC}: 192.168.0.100
{D43A468B-F3AE-4BF9-9391-4863A4500583}: 10.5.9.207

Author of this module claims it should work on Windows, UNIX and Mac OS X.

Answer 3

I use this on my ubuntu machines:

import commands
commands.getoutput("/sbin/ifconfig").split("\n")[1].split()[1][5:]

This doesn't work.

Answer 4

This will work on most linux boxes:

import socket, subprocess, re
def get_ipv4_address():
    """
    Returns IP address(es) of current machine.
    :return:
    """
    p = subprocess.Popen(["ifconfig"], stdout=subprocess.PIPE)
    ifc_resp = p.communicate()
    patt = re.compile(r'inet\s*\w*\S*:\s*(\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})')
    resp = patt.findall(ifc_resp[0])
    print resp

get_ipv4_address()

Answer 5

Note: This is not using the standard library, but quite simple.

$ pip install pif

from pif import get_public_ip
get_public_ip()

Answer 6

Variation on ninjagecko's answer. This should work on any LAN that allows UDP broadcast and doesn't require access to an address on the LAN or internet.

import socket
def getNetworkIp():
    s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
    s.setsockopt(socket.SOL_SOCKET, socket.SO_BROADCAST, 1)
    s.connect(('<broadcast>', 0))
    return s.getsockname()[0]

print (getNetworkIp())