如何将子词典移动到另一个词典？

Question

I am writing a function that takes 2 strings as inputs and would move a section of the dictionary to another.

def move(item_to_move, destination):
    # do something....

My initial dictionary looks like this.

directories = { 
    'beers': {
        'ipa': {
            'stone': {}
        } 
    },

    'wines': {
        'red': {
            'cabernet': {}
        }
    },
    'other' : {}
}

I would like to move either a subsection or section of the dictionary to another section. The sections are represented by each key of the path delimited by a '/'. For example, the inputs for my function would be:

item_to_move='beers/ipa'
destination='other'

move(directories, item_to_move,destination)

The output would be:

{ 
    'wines': {
        'red': {
            'cabernet': {}
        },
    },
    'other' :{
        'beers': {
            'ipa': {
                'stone': {}
        }   } 
    },
}

NOTE: I am assuming all input paths for items_to_move are valid.

Answer 1

Find the origin's parent dictionary and the target's dictionary, then update the the target's dictionary with the origin's key and value (removing it from the origin's parent):

def move(tree,originPath,targetPath):
    originKey = None
    for originName in originPath.split("/"):
        originParent = originParent[originKey] if originKey else tree
        originKey = originName
    targetDict = tree
    for targetName in targetPath.split("/"):
        targetDict = targetDict[targetName] 
    targetDict.update({originKey:originParent.pop(originKey)})

output:

directories = { 
    'beers': {
        'ipa': {
            'stone': {}
        } 
    },

    'wines': {
        'red': {
            'cabernet': {}
        }
    },
    'other' : {}
}

move(directories,'beers/ipa','other')
print(directories)

{ 'beers': {},
  'wines': { 'red': {'cabernet': {}} },
  'other': { 'ipa': {'stone':    {}} }
}