[CentralOH] SheevaPlug - Python app right out of the box!

[Eric Floehr]

There is also a third-party module called netifaces (available on the
cheeseshop (so just "easy_install netifaces") which wraps it all up
and makes it cross-platform:

http://pypi.python.org/pypi/netifaces

Example from my machine:

In [1]: import netifaces

In [2]: netifaces.interfaces()
Out[2]: ['lo', 'eth0', 'vmnet1', 'vmnet8']

In [3]: netifaces.ifaddresses('eth0')
Out[3]:
{2: [{'addr': '192.168.13.13',
      'broadcast': '192.168.13.255',
      'netmask': '255.255.255.0'}],
 10: [{'addr': 'fe80::224:e8ff:fe45:87a4%eth0',
       'netmask': 'ffff:ffff:ffff:ffff::'}],
 17: [{'addr': '00:24:e8:45:87:a4', 'broadcast': 'ff:ff:ff:ff:ff:ff'}]}

In [4]: netifaces.ifaddresses('eth0')[netifaces.AF_INET][0]['addr']
Out[4]: '192.168.13.13'

-Eric




On Thu, Apr 1, 2010 at 10:12 AM, Jon Miller <jonebird at gmail.com> wrote:
> I felt bad for supplying a shell version... another trick you can do
> is to use the 'socket' module. If you happen to have a host which you
> can connect to on the network, then this trick might be good for you.
> In my example, I'll connect to a  fictious server named 'jumpbox' on
> port 22:
>
> import socket
> s1 = socket.socket()
> s.connect(('jumpbox', 22))
> print 'My IP is %s' % s.getsockname()[0]
>
> -- Jon Miller
>
> On Thu, Apr 1, 2010 at 9:36 AM, Jon Miller <jonebird at gmail.com> wrote:
>> This is what I do to determine my frontend IP:
>>  INTERFACE=$(/sbin/ip route list default | sed -n '/^default /s/.*
>> dev \([a-z0-9]*\) $/\1/p' | head -1)
>>  /sbin/ip addr show dev $INTERFACE primary | sed -n '/inet /s/.*inet
>> \([^ ]*\) .*$/\1/p' | sed 's|/24||g'
>>
>> -- Jon
>>
>> On Thu, Apr 1, 2010 at 9:03 AM, Mark Erbaugh <mark at microenh.com> wrote:
>>> Has anyone in the COhPy messed with a SheevaPlug? This is a "plug computer" that comes preloaded with a version of Ubuntu 9.04 and, more importantly, Python 2.5 is installed. I have a small (but useful) web-based app written using webpy. I simply copied the files to a USB memory stick. Once I mounted the memory stick on the SheevaPlug, I issued the command 'python main.py' and my app was off an running. Pretty cool!
>>>
>>> I have a question related to my webpy app.  Is there some python code for determining the IP address on which it is listening?  When the webpy app runs, it always displays http://0.0.0.0:8080/.  I end up having to use ifconfig to get the IP address.
>>>
>>> Mark
>>> _______________________________________________
>>> CentralOH mailing list
>>> CentralOH at python.org
>>> http://mail.python.org/mailman/listinfo/centraloh
>>>
>>
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