Lauren wrote...
> Based on some research I've done, I think I want my data structure to
> be a series of lists within lists:
> [...]
> Can someone give me some pointers on how to think about this
> clearly?? I'm obviously missing some steps!! :-(
I find your example a bit hard to follow. From the node names I can't
determine a logical hierarchy; it might be the formatting of the email message.
Could you express the way you get your query results in terms of the below
geography names? Then maybe I can think up a way how to combine those lists
into a tree.
# start of example
# this example uses a hierarchy of three levels: 1) continent, 2)
country/state, and 3) city
geo=[
"australia",
"europe",[
"spain",
"germany",
"belgium",
],
"america",[
"california",[
"los angeles",
"san francisco",
"berkeley"
],
"texas",
"utah"
],
"asia"
]
print "Our geography as a flat list:\n"
print geo
def printlist(lst,indent=0):
for item in lst:
if isinstance(item,(list,tuple)):
printlist(item,indent+1)
else:
print " -> "*indent, item
print "\nOur geography as a tree:\n"
printlist(geo)
# end of example
This prints:
Our geography as a flat list:
['australia', 'europe', ['spain', 'germany', 'belgium'], 'america',
['california', ['los angeles', 'san francisco', 'berkeley'], 'texas',
'utah'], 'asia']
Our geography as a tree:
australia
europe
-> spain
-> germany
-> belgium
america
-> california
-> -> los angeles
-> -> san francisco
-> -> berkeley
-> texas
-> utah
asia
--
"The ability of the OSS process to collect and harness
the collective IQ of thousands of individuals across
the Internet is simply amazing." - Vinod Vallopillil
http://www.catb.org/~esr/halloween/halloween4.html
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