Retrieve item deep in dict tree?
Ethan Furman
ethan at stoneleaf.us
Wed Apr 2 14:15:13 EDT 2014
On 04/02/2014 10:58 AM, Roy Smith wrote:
>
> I have a big hairy data structure which is a tree of nested dicts. I have
> a sequence of strings which represents a path through the tree. Different
> leaves in the tree will be at different depths (which range from 1 to about
> 4 or 5 at most). I want to get the value stored at that path. Thus, if
>
> keys = ['foo', 'bar', 'baz']
>
> I want to retrieve tree['foo']['bar']['baz'].
>
> Is there some idiomatic, non-cryptic way to write that as a one-liner?
>
> I'm using Python 2.7.
Can you make the top-level tree a custom dict that understands tuple keys should be drilled down?
--
~Ethan~
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