Add key, values dynamically to a dictionary in python

Question

Given a path(keys) in list, need to add value to given dictionary

data = {'personal_information': {'name' : {'first_name': 'Ashutosh'}}}

path_to_add = ['personal_information', 'address': 'state']

value = 'Delhi'

expected_output = {'personal_information': {'name' : {'first_name': 'Ashutosh'}}, 'address': {'state': 'Delhi'}}

Answer 1

You can use recursion for this. Like this:

data = {'personal_information': {'name' : {'first_name': 'Ashutosh'}}}

path_to_add = ['personal_information', 'address', 'state']

value = 'Delhi'

def addValue(dictionary, path, value):

    if len(path) > 1:

        if path[0] not in dictionary.keys():

            dictionary[path[0]] = {}

        addValue(dictionary[path[0]], path[1:], value)

    else:

        dictionary[path[0]] = value

print(data)

addValue(data, path_to_add, value)

print(data)

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