Thanks also for your help!
So taking into account that tree data structures can be created as a
nested tuples...
Do you have any pointers on how to get from here
continent = ["australia", "europe", "america", "asia"]
country = [["spain", "germany", "belgium"], ["united states", "canada"]]
state = ["california", "oregon", "arizona"]
To here:
geo=[
("australia", []),
("europe",
[("spain",[]),
("germany",[]),
(belgium",[])]),
("north america",
[("united states",[
("california",[]),
("oregon",[]),
("arizona",[])
])
]),
("canada", []),
("asia", [])
]
??
Thanks Again!
Lauren
>
> I think the normal way of representing a tree in python would be as
> (value, children) tuples.
>
> In this case, you would have:
>
> geo = [('australia', []), ('europe', [('spain', []), ('germany', []),
> ('belgium', [])]),
> ('america', [('california', [('los angeles', []), ('san
> francisco', [])]),
> ('texas', [('detroit', [])])]),
> # etc
> ]
>
> This lets you avoid messy isinstance testing to figure out if you've
> got a value or a list of children.
> (admittedly, it can be hard to keep track of the brackets, but good
> indentation and a monospaced font should help out)
>
> --
> John.
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