On Mar 4, 3:57 pm, Sneaky Wombat <joe.hr...@gmail.com> wrote:
> [ {'vlan_or_intf': 'VLAN2021'},
> {'vlan_or_intf': 'Interface'},
> {'vlan_or_intf': 'Po1'},
> {'vlan_or_intf': 'Po306'},
> {'vlan_or_intf': 'VLAN2022'},
> {'vlan_or_intf': 'Interface'},
> {'vlan_or_intf': 'Gi7/33'},
> {'vlan_or_intf': 'Po1'},
> {'vlan_or_intf': 'Po306'},
> {'vlan_or_intf': 'VLAN2051'},
> {'vlan_or_intf': 'Interface'},
> {'vlan_or_intf': 'Gi9/6'},
> {'vlan_or_intf': 'VLAN2052'},
> {'vlan_or_intf': 'Interface'},
> {'vlan_or_intf': 'Gi9/6'},]
>
> I want it to be converted to:
>
> [{'2021':['Po1','Po306']},{'2022':['Gi7/33','Po1','Po306']},etc etc]
>
> I was going to write a def to loop through and look for certain pre-
> compiled regexs, and then put them in a new dictionary and append to a
> list, but I'm having trouble thinking of a good way to capture each
> dictionary. Each dictionary will have a key that is the vlan and the
> value will be a list of interfaces that participate in that vlan.
> Each list will be variable, many containing only one interface and
> some containing many interfaces.
>
> I thought about using itertools, but i only use that for fixed data.
> I don't know of a good way to loop over variably sized data. I was
> wondering if anyone had any ideas about a good way to convert this
> list or dictionary into the right format that I need. The solution I
> come up with will most likely be ugly and error prone, so I thought
> i'd ask this python list while I work. Hopefully I learn a better way
> to solve this problem.
>
> Thanks!
>
> I also have the data in a list,
>
> [ 'VLAN4065',
> 'Interface',
> 'Gi9/6',
> 'Po2',
> 'Po3',
> 'Po306',
> 'VLAN4068',
> 'Interface',
> 'Gi9/6',
> 'VLAN4069',
> 'Interface',
> 'Gi9/6',]
===================================
from itertools import groupby
data = \
[ {'vlan_or_intf': 'VLAN2021'},
{'vlan_or_intf': 'Interface'},
{'vlan_or_intf': 'Po1'},
{'vlan_or_intf': 'Po306'},
{'vlan_or_intf': 'VLAN2022'},
{'vlan_or_intf': 'Interface'},
{'vlan_or_intf': 'Gi7/33'},
{'vlan_or_intf': 'Po1'},
{'vlan_or_intf': 'Po306'},
{'vlan_or_intf': 'VLAN2051'},
{'vlan_or_intf': 'Interface'},
{'vlan_or_intf': 'Gi9/6'},
{'vlan_or_intf': 'VLAN2052'},
{'vlan_or_intf': 'Interface'},
{'vlan_or_intf': 'Gi9/6'},]
def clean_up(lst):
return [d.values()[0] for d in data if d.values()[0] != 'Interface']
out = {}
for k, g in groupby(clean_up(data) , key=lambda s:
s.startswith('VLAN')):
if k:
key = list(g)[0].replace('VLAN','')
else:
out[key] = list(g)
print out
===================================
hth,
L.
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