inet_aton and struct issue

[David Bear]

Diez B. Roggisch wrote:

> David Bear schrieb:
>> I found this simple recipe for converting a dotted quad ip address to a
>> string of a long int.
>> 
>> struct.unpack('L',socket.inet_aton(ip))[0]
>> 
>> trouble is when I use this, I get
>> 
>> struct.error: unpack str size does not match format
>> 
>> I thought ip addresses were unsigned 32 bit integers.
>> 
>> Is there a better way to take a dotted quad and convert it to a string
>> representation of an long int?
> 
> Works for me:
> 
>  >>> import socket
>  >>> import struct
>  >>> ip = "127.0.0.1"
>  >>> struct.unpack('L',socket.inet_aton(ip))[0]
> 2130706433L
> 

I really wish it worked for me:

>>> struct.unpack('L', socket.inet_aton('129.219.120.129'))
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
struct.error: unpack str size does not match format

This is python packaged with Suse 9.3.
>>> dir(struct)
['__doc__', '__file__', '__name__', 'calcsize', 'error', 'pack', 'unpack']
>>> print struct.__file__
/usr/lib64/python2.4/lib-dynload/struct.so

could I have a broken python?

> 
> Diez

-- 
David Bear
-- let me buy your intellectual property, I want to own your thoughts --