Xtykutl

I have a dict with many values, some of which are sub-dicts which also have sub-dicts and so on.

For every value, I need to build a string concatenating the top level key with a dot. So for example, if my dict is {'a': 1, 'b': {'c': 2, 'd': 3, 'e': {'f': 4}}}, I need to build the following strings:

a

b.c

b.d

b.e.f

To do so, I wrote the following code

from types import GeneratorType





def get_parameter(d, top_level_param):

    for k, v in d.items():

        parameter = top_level_param + '.' + k

        if isinstance(v, dict):

            get_parameter(v, parameter)

        else:

            yield parameter





d = {'a': 1, 'b': {'c': 2, 'd': 3, 'e': {'f': 4}}}



for k, v in d.items():

    if isinstance(v, dict):

        parameter = get_parameter(v, k)

    else:

        parameter = k



    if isinstance(parameter, GeneratorType):

        for p in parameter:

            print(p)

    else:

        print(parameter)

However, the output is missing b.e.f and I don't know why. On paper, it looks like it should have been returned by get_parameter().

get_parameter recursively calls itself, but doesn't do anything with the results. Instead, you want to yield those results, too, which you can do with the yield from statement:

def get_parameter(d, top_level_param):

    for k, v in d.items():

        parameter = top_level_param + '.' + k

        if isinstance(v, dict):

            yield from get_parameter(v, parameter)

        else:

            yield parameter