Get the path of each key in a dictionary

dictionary_key_paths.py

from __future__ import annotations
from typing import Iterator, TypeVar

T = TypeVar('T')


def get_dict_keys_path(dct: dict[T, ...], keys: list[T] | None = None) -> Iterator[T]:
    if keys is None:
        keys = []
    for k, v in dct.items():
        keys.append(k)
        yield ''.join([f"['{x}']" for x in keys[:]])
        if isinstance(v, dict):
            yield from get_dict_keys_path(dct=v, keys=keys)
        keys.pop()
        
        
# example:
dct = {
    'a': {
        'b': {
            'b1': {},
            'b2': {}
        },
        'c': {
            'c1': {}
        }
    }
}


for x in get_dict_keys_path(dct):
    print(x)
    
['a']
['a']['b']
['a']['b']['b1']
['a']['b']['b2']
['a']['c']
['a']['c']['c1']