# Source: https://stackoverflow.com/questions/21028979/how-to-recursively-find-specific-key-in-nested-json

# As generator for memory performance

​

def item_generator(json_input, lookup_key):

    if isinstance(json_input, dict):

        for k, v in json_input.items():

            if k == lookup_key:

                yield v

            else:

                yield from item_generator(v, lookup_key)

    elif isinstance(json_input, list):

        for item in json_input:

            yield from item_generator(item, lookup_key)

def json_find(obj, key):

    """Recursively fetch values from nested JSON."""

    arr = []

​

    def extract(obj, arr, key):

        """Recursively search for values of key in JSON tree."""

        if isinstance(obj, dict):

            for k, v in obj.items():

                if isinstance(v, (dict, list)):

                    extract(v, arr, key)

                elif k == key:

                    arr.append(v)

        elif isinstance(obj, list):

            for item in obj:

                extract(item, arr, key)

        return arr

​

    values = extract(obj, arr, key)

    return values