Here is a tricky method : reduce(lambda x,y:x[str(y)],keys,tree)
---------- Forwarded message ---------- From: Roy Smith <r...@panix.com> To: Python List <python-list@python.org> Cc: Date: Wed, 2 Apr 2014 13:58:16 -0400 Subject: Retrieve item deep in dict tree? 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.
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