[Tutor] how to convert list of lists to dict

[Brad Hudson]

On Tue, May 17, 2011 at 12:10 PM, Alan Gauld <alan.gauld at btinternet.com>wrote:

>
> Given that you want more than one method I assume
> this is a homwework assignment rather than a practical
> problem? If so we would prefer that you showed us what
> you tried and we can then help you fix it rather than
> just offer you solutions from which you will learn little.
>

It's really more that I'm a newbie to python. Trying to translate from perl
to python in my head...

How did you think it should be done?
> Maybe if we start from there?
>

This is where I started (not elegant at all, but learning):
def get_vms():
        import subprocess
        p = subprocess.Popen(['/usr/sbin/ldm', 'ls', '-p'],
stdout=subprocess.PIPE).communicate()[0]
        p = p.split('\n')
        [p.remove(item) for item in p if not item.startswith('DOMAIN')]
        p = [item.replace('DOMAIN|', '') for item in p]
        p = [i.split('|') for i in p]
        print p

The results are as follows:
Python 2.4.6 (#1, Dec 13 2009, 23:45:11) [C] on sunos5
Type "help", "copyright", "credits" or "license" for more information.
>>> import subprocess
>>> p = subprocess.Popen(['/usr/sbin/ldm', 'ls', '-p'],
stdout=subprocess.PIPE).communicate()[0]
>>> p
'VERSION
1.5\nDOMAIN|name=primary|state=active|flags=-n-cv-|cons=UART|ncpu=8|mem=8589934592|util=1.0|uptime=5790996\nDOMAIN|name=ilhsf002v001|state=active|flags=-n----|cons=5000|ncpu=32|mem=34359738368|util=0.0|uptime=5423393\nDOMAIN|name=ilhsf002v002|state=inactive|flags=------|cons=|ncpu=8|mem=8589934592|util=|uptime=\n'
>>> p = p.split('\n')
>>> p
['VERSION 1.5',
'DOMAIN|name=primary|state=active|flags=-n-cv-|cons=UART|ncpu=8|mem=8589934592|util=1.0|uptime=5790996',
'DOMAIN|name=ilhsf002v001|state=active|flags=-n----|cons=5000|ncpu=32|mem=34359738368|util=0.0|uptime=5423393',
'DOMAIN|name=ilhsf002v002|state=inactive|flags=------|cons=|ncpu=8|mem=8589934592|util=|uptime=',
'']
>>> [p.remove(item) for item in p if not item.startswith('DOMAIN')]
[None, None]
>>> p
['DOMAIN|name=primary|state=active|flags=-n-cv-|cons=UART|ncpu=8|mem=8589934592|util=1.0|uptime=5790996',
'DOMAIN|name=ilhsf002v001|state=active|flags=-n----|cons=5000|ncpu=32|mem=34359738368|util=0.0|uptime=5423393',
'DOMAIN|name=ilhsf002v002|state=inactive|flags=------|cons=|ncpu=8|mem=8589934592|util=|uptime=']
>>> p = [item.replace('DOMAIN|', '') for item in p]
>>> p
['name=primary|state=active|flags=-n-cv-|cons=UART|ncpu=8|mem=8589934592|util=1.0|uptime=5790996',
'name=ilhsf002v001|state=active|flags=-n----|cons=5000|ncpu=32|mem=34359738368|util=0.0|uptime=5423393',
'name=ilhsf002v002|state=inactive|flags=------|cons=|ncpu=8|mem=8589934592|util=|uptime=']
>>> p = [i.split('|') for i in p]
>>>
>>> p
[['name=primary', 'state=active', 'flags=-n-cv-', 'cons=UART', 'ncpu=8',
'mem=8589934592', 'util=1.0', 'uptime=5790996'], ['name=ilhsf002v001',
'state=active', 'flags=-n----', 'cons=5000', 'ncpu=32', 'mem=34359738368',
'util=0.0', 'uptime=5423393'], ['name=ilhsf002v002', 'state=inactive',
'flags=------', 'cons=', 'ncpu=8', 'mem=8589934592', 'util=', 'uptime=']]
>>>

Goal:
To take the results from a process, parse the data into a dictionary object
that can be returned from the function for use in a script. The dictionary
object needs to be able to access sub-data (e.g. state, memory, cpus, etc.)
from the key (server names).
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