On Sat, 14 Jan 2006 16:46:29 -0400, David Pratt <[EMAIL PROTECTED]> wrote:
>Hi Allan, Max, and bearophile
>
>Many thanks for your replies to this. The number of levels can be deeper
>than two for creating child, sibling relationships. This can lead to
>futher nesting as shown in my sample result list (the result I am
>attempting to acheive) which is reason that I believe this has to be
>recursive to work. As an illustration, I have altered the source_dict to
>show this by making Geometries the parent of Geometry. I should have
>gone one more level to illustrate this properly - my apologies for not
>doing this better.
>
>source_list = [{'title': 'Project', 'parent':'root'},
> {'title': 'Geometry', 'parent':'Geometries'},
> {'title': 'Soil', 'parent':'root'},
> {'title': 'Geometries', 'parent':'Project'},
> {'title': 'Verticals', 'parent':'Project'},
> {'title': 'Points', 'parent':'Geometry'},
> {'title': 'Layers', 'parent':'Geometry'},
> {'title': 'Water', 'parent':'Geometry'},
> {'title': 'Soiltypes', 'parent':'Soil'}
> ]
>
>Project and Soil in root,
>Geometries (Geometries containing Geometry with its siblings) and
>Verticals in Project,
>Soiltypes in Soil
>
>In this instance, I am looking for a result list that looks like this:
>
>result_list = [
> # Project
> ['Project', ['Geometries',['Geometry', ['Points',
>'Layers','Water']],'Verticals']],
> # Soil
> ['Soil', ['Soiltypes']]
> ]
>
>I have not yet installed http://sourceforge.net/projects/pynetwork/ but
>will also give this a try. What I need is something like elementree
>minus the xml since I am working with list of dicts obtained from more
>than one type of source.
>
If you literally want "# Project" comments in the output, it will have
to be a source code (string) output, e.g., the following generates and
prints both:
----< david_pratt.py >--------------------------------------------------
source_list = [{'title': 'Project', 'parent':'root'},
{'title': 'Geometry', 'parent':'Geometries'},
{'title': 'Soil', 'parent':'root'},
{'title': 'Geometries', 'parent':'Project'},
{'title': 'Verticals', 'parent':'Project'},
{'title': 'Points', 'parent':'Geometry'},
{'title': 'Layers', 'parent':'Geometry'},
{'title': 'Water', 'parent':'Geometry'},
{'title': 'Soiltypes', 'parent':'Soil'}
]
children = {}
for d in source_list:
children.setdefault(d['parent'], []).append(d['title'])
def get_progeny(title, d=children):
if title in d: return [title] + [get_progeny(child) for child in d[title]]
else: return title
source = ['result_list = [']
result_list = []
for child in children['root']:
source.append(' # %s'%child)
source.append(' %r,'% get_progeny(child))
result_list.append(get_progeny(child))
source.append(' ]')
result_list_source = '\n'.join(source)
print result_list_source
print result_list
------------------------------------------------------------------------
[18:20] C:\pywk\clp>py24 david_pratt.py
result_list = [
# Project
['Project', ['Geometries', ['Geometry', 'Points', 'Layers', 'Water']],
'Verticals'],
# Soil
['Soil', 'Soiltypes'],
]
[['Project', ['Geometries', ['Geometry', 'Points', 'Layers', 'Water']],
'Verticals'], ['Soil', '
Soiltypes']]
Regards,
Bengt Richter
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