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I am new to python. I want to get the ipaddress of the system. I am connected in LAN. When i use the below code to get the ip, it shows 127.0.1.1 instead of 192.168.1.32. Why it is not showing the LAN ip. Then how can i get my LAN ip. Every tutorials shows this way only. I also checked via connecting with mobile hotspot. Eventhough, it shows the same.

import socket    
hostname = socket.gethostname()    
IPAddr = socket.gethostbyname(hostname)    
print("Your Computer Name is:" + hostname)    
print("Your Computer IP Address is:" + IPAddr)

Output:

Your Computer Name is:smackcoders
Your Computer IP Address is:127.0.1.1

Required Output:

Your Computer Name is:smackcoders
Your Computer IP Address is:192.168.1.32
Smack Alpha
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  • Which operating system? – Klaus D. Mar 22 '19 at 09:32
  • Ubuntu 16.04 OS – Smack Alpha Mar 22 '19 at 09:33
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    Possible duplicate of [Finding local IP addresses using Python's stdlib](https://stackoverflow.com/questions/166506/finding-local-ip-addresses-using-pythons-stdlib) – Klaus D. Mar 22 '19 at 09:35
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    Can you paste the output of the following file here? "cat /etc/hosts" – sanooj Mar 22 '19 at 09:35
  • 127.0.0.1 localhost 127.0.1.1 smackcoders # The following lines are desirable for IPv6 capable hosts ::1 ip6-localhost ip6-loopback fe00::0 ip6-localnet ff00::0 ip6-mcastprefix ff02::1 ip6-allnodes ff02::2 ip6-allrouters – Smack Alpha Mar 22 '19 at 09:39
  • This line "127.0.1.1 smackcoders" is causing the DNS to resolve to 127.0.1.1. You can try removing/commenting this line and rerun. – sanooj Mar 22 '19 at 09:40

6 Answers6

24

I got this same problem with my raspi.

host_name = socket.gethostname()`
host_addr = socket.gethostbyname(host_name)

and now if i print host_addr, it will print 127.0.1.1. So i foundthis: https://www.raspberrypi.org/forums/viewtopic.php?t=188615#p1187999 

host_addr = socket.gethostbyname(host_name + ".local")

and it worked.

JubinBlack
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12

As per the above '/etc/hosts' file content, you have an IP address mapping with '127.0.1.1' to your hostname. This is causing the name resolution to get 127.0.1.1. You can try removing/commenting this line and rerun.

sanooj
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6

How can I get the IP address of eth0 in Python?

s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
s.connect(("8.8.8.8", 80))
print s.getsockname()[0]
Patrik
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2

This also worked for me:

gethostbyname(gethostname()+'.')
Bruce
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0

i get the same problem what your are facing. but I get the solution with help of my own idea, And don't worry it is simple to use. if you familiar to linux you should heard the ifconfig command which return the informations about the network interfaces, and also you should understand about grep command which filter the lines which consist specified words now just open the terminal and type

ifconfig | grep 255.255.255.0

and hit enter now you will get wlan inet address line alone like below

inet 192.168.43.248  netmask 255.255.255.0  broadcast 192.168.43.255

in your terminal in your python script just insert

#!/usr/bin/env python
import subprocess
cmd = "ifconfig | grep 255.255.255.0"
inet = subprocess.check_output(cmd, shell = True)
inet = wlan.decode("utf-8")
inet = wlan.split(" ")
inet_addr = inet[inet.index("inet")+1]
print(inet_addr)

this script return your local ip address, this script works for me and I hope this will work for your linux machine all the best

Marimuthu
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This solution works for me on Windows. If you're using Linux you could try this line of code instead:

IPAddr = socket.gethostbyname(socket.getfqdn())
Remy
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