python - Generate a nested dictionary from a string

Question

I would like to obtain a nested dictionary from a string, which can be split by delimiter, :.

s='A:B:C:D'
v=['some','object']
desired={'A':{'B':{'C':{'D':v}}}}

Is there a "pythonic" way to generate this?

question from:https://stackoverflow.com/questions/65890917/generate-a-nested-dictionary-from-a-string

Answer 1

You can write a recursive function to do this:

>>> s = 'A:B:C:D'
>>> v = ['some','object']
>>> def generate_dict(keys, val):
...     if len(keys) == 1:
...             return {keys[0]: val}
...     return {keys[0]:generate_dict(keys[1:], val)}
...
>>> generate_dict(s.split(':'), v)
{'A': {'B': {'C': {'D': ['some', 'object']}}}}