Python - How To Update A Multi-dimensional Dict

Follow up of my previous question: Python - How to recursively add a folder's content in a dict. When I build the information dict for each file and folder, I need to merge it to t

Solution 1:

Of course you can create nested dictionaries on-the-fly. What about this:

# Example path, I guess something like thisis produced by path2indice?!
indices = ("home", "username", "Desktop")

tree = {}

d = tree
for indice in indices[:-1]:
    if indice not in d:
        d[indice] = {}

    d = d[indice]

d[indices[-1]] = "some value"

print tree # this will print {'home': {'username': {'Desktop': 'some value'}}}

Solution 2:

I'm not entirely sure I understand what you're asking for, but it seems like a textbook case for recursion. I think something like this might be of use (as a replacement for your current method):

import os

FILES = ...
def process(directory):
    dir_dict = {}
    for file inos.listdir(directory):
        filename = os.path.join(directory, file)
        ifos.path.isdir(file):
            dir_dict[file] = process(filename)
        else: # assuming it needs to be processed as a file
            dir_dict[file] = Analyse(filename)
    return dir_dict

(based on phihag's answer to your other question) Basically this constructs a dict for each directory containing the analyzed information about the files in that directory, and inserts that dict into the dict for the parent directory.

If it's not this, I think dict.update and/or the collections.defaultdict class may need to be involved.