socket error - python

Question

i want to get the local private machine's address, running the following piece of code:

socket.gethostbyaddr(socket.gethostname())

gives the error:

socket.herror: [Errno 2] Host name lookup failure

i know i can see local machine's address, by using

socket.gethostbyname(socket.gethostname())

but it shows the public address of my network (or machine) and ifcofig shows another address for my wlan. can some one help me on this issue? Thanks

@ruddra if she didn't, that would result in a totally different error (NameError), that doesn't seem to be the issue here. — Lukas Graf
– Lukas Graf, Commented May 22, 2014 at 13:00

James Mills · Accepted Answer · 2014-05-22 13:08:23Z

1

I believe you're going to find netifaces a little more useful here.

It appears to be a cross-platform library to deal with Network Interfaces.

Example:

>>> from netifaces import interfaces, ifaddresses
>>> interfaces()
['lo', 'sit0', 'enp3s0', 'docker0']
>>> ifaddresses("enp3s0")
{17: [{'broadcast': 'ff:ff:ff:ff:ff:ff', 'addr': 'bc:5f:f4:97:5a:69'}], 2: [{'broadcast': '10.0.0.255', 'netmask': '255.255.255.0', 'addr': '10.0.0.2'}], 10: [{'netmask': 'ffff:ffff:ffff:ffff::', 'addr': '2001:470:edee:0:be5f:f4ff:fe97:5a69'}, {'netmask': 'ffff:ffff:ffff:ffff::', 'addr': 'fe80::be5f:f4ff:fe97:5a69%enp3s0'}]}
>>> 
>>> ifaddresses("enp3s0")[2][0]["addr"]
'10.0.0.2'  # <-- My Desktop's LAN IP Address.

answered May 22, 2014 at 13:08

James Mills

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2 Comments

Maria Over a year ago

tnx that worked fine and was what i wanted, but is there a way to find the IP address using sockets?

James Mills Over a year ago

No not really. Not in the way you describe. The sockets modules only provides the two functions you've already seen and they're limited at best.

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