Python what's the data structure for triple data

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Published on 2010-06-17T17:46:23Z Indexed on 2010/06/17 17:53 UTC
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I've got a set of data that has three attributes, say A, B, and C, where A is kind of the index (i.e., A is used to look up the other two attributes.) What would be the best data structure for such data?

I used two dictionaries, with A as the index of each. However, there's key errors when the query to the data doesn't match any instance of A.

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