Determine ip address

[codecraig]

hi,
how can i use python to figure the ip address of the machine which
the python script is running on? I dont mean like 127.0.0.1....bu t i
want the external IP address (such as ipconfig on windows displays).

any ideas??

THanks

[Simon Brunning]

Re: Determine ip address

On 15 Apr 2005 06:03:06 -0700, codecraig <codecraig@gmai l.com> wrote:[color=blue]
> hi,
> how can i use python to figure the ip address of the machine which
> the python script is running on? I dont mean like 127.0.0.1....bu t i
> want the external IP address (such as ipconfig on windows displays).[/color]

On Windows, this works:

socket.gethostb yname(socket.ge thostname())

Is that OK on real operating systems too?

--
Cheers,
Simon B,
simon@brunningo nline.net,

http://www.brunningonline.net/simon/blog/

[rbt]

Re: Determine ip address

codecraig wrote:[color=blue]
> hi,
> how can i use python to figure the ip address of the machine which
> the python script is running on? I dont mean like 127.0.0.1....bu t i
> want the external IP address (such as ipconfig on windows displays).
>
> any ideas??
>
> THanks
>[/color]

To get the public IP (like when you're behind a wirless router, etc) you
may try doing something like this:

import urllib
import re
import time

ip_search = re.compile ('\d{1,3}\.\d{1 ,3}\.\d{1,3}\.\ d{1,3}')

try:
f = urllib.urlopen( "http://www.ipchicken.c om")
data = f.read()
f.close()
current_ip = ip_search.finda ll(data)
if current_ip:
print current_ip
time.sleep(3)
except Exception:
pass

HTH,

rbt

[Andy Jeffries]

Re: Determine ip address

codecraig wrote:[color=blue]
> hi,
> how can i use python to figure the ip address of the machine which
> the python script is running on? I dont mean like 127.0.0.1....bu t i
> want the external IP address (such as ipconfig on windows displays).[/color]

I use the following (all on one line):

external_ip = os.popen("/sbin/ifconfig eth0|/bin/grep inet|/bin/awk
'{print $2}' | sed -e s/.*://", "r").read().str ip()

Cheers,


Andy

[Donn Cave]

Re: Determine ip address

In article <mailman.1959.1 113571156.1799. python-list@python.org >,
Simon Brunning <simon.brunning @gmail.com> wrote:
[color=blue]
> On 15 Apr 2005 06:03:06 -0700, codecraig <codecraig@gmai l.com> wrote:[color=green]
> > hi,
> > how can i use python to figure the ip address of the machine which
> > the python script is running on? I dont mean like 127.0.0.1....bu t i
> > want the external IP address (such as ipconfig on windows displays).[/color]
>
> On Windows, this works:
>
> socket.gethostb yname(socket.ge thostname())
>
> Is that OK on real operating systems too?[/color]

It will work sometimes, but there is nothing I know of
that specifically distinguishes "the" external network.
If you want something that reliably finds a network that
will be used for a certain type of connection, then the
best thing to do is make a connection like that, and
inspect the results. The getsockname() method shows the
IP address.

Donn Cave, donn@u.washingt on.edu

[Lee Harr]

Re: Determine ip address

On 2005-04-15, codecraig <codecraig@gmai l.com> wrote:[color=blue]
> hi,
> how can i use python to figure the ip address of the machine which
> the python script is running on? I dont mean like 127.0.0.1....bu t i
> want the external IP address (such as ipconfig on windows displays).
>
> any ideas??
>[/color]



I use this:

#conf.py
ifconfig = '/sbin/ifconfig'
iface = 'eth0'
telltale = 'inet addr:'


#addr.py
import commands

from conf import ifconfig, iface, telltale

def my_addr():
cmd = '%s %s' % (ifconfig, iface)
output = commands.getout put(cmd)

inet = output.find(tel ltale)
if inet >= 0:
start = inet + len(telltale)
end = output.find(' ', start)
addr = output[start:end]
else:
addr = ''

[fuzzylollipop]

Re: Determine ip address

import socket
print socket.gethostb yname( socket.gethostn ame() )

[ontiscal@tenup.com]

Re: Determine ip address

http://checkip.tk/

codecraig ha scritto:[color=blue]
> hi,
> how can i use python to figure the ip address of the machine which
> the python script is running on? I dont mean like 127.0.0.1....bu t i
> want the external IP address (such as ipconfig on windows displays).
>
> any ideas??
>
> THanks[/color]

[Mike Meyer]

Re: Determine ip address

[Format recovered from top-posting.]

ontiscal@tenup. com writes:[color=blue]
> codecraig ha scritto:[color=green]
>> how can i use python to figure the ip address of the machine which
>> the python script is running on? I dont mean like 127.0.0.1....bu t i
>> want the external IP address (such as ipconfig on windows displays).[/color]
>
> http://checkip.tk/[/color]

That won't work if you're on a NAT'ed network - it will instead return
the external address of the NAT gateway. ipconfig displays the ip
address(es) of the interfaces on the current machine.

You need to use the socket.socket.g etsockname method:

py> import socket
py> s = socket.socket()
py> s.connect(("goo gle.com", 80))
py> s.getsockname()
('192.168.1.1', 57581)
py>

The local ethernet card is 192.168.1.1, the local port for the socket
is 57581.

Note that the presence of multiple interface cards makes the question
ambiguous.

<mike
--
Mike Meyer <mwm@mired.or g> http://www.mired.org/home/mwm/
Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information.