flatten_json.py

flatten_json.py

def flatten_json(json_like):
    """

    :param json_like: JSONable object
    :return: flatten JSON-object, i.e. no inner dicts or lists
    """
    from collections import deque

    backlog = deque(("", json_like))
    output = {}
    while backlog:
        prefix, value = backlog.pop()
        if isinstance(value, dict):
            backlog.extend(
                (f"{prefix}.{postfix}" if prefix else postfix, v)
                for postfix, v in value.items()
            )
        if isinstance(value, list):
            backlog.extend(
                (f"{prefix}.{index}" if prefix else str(index), v)
                for index, v in enumerate(value)
            )
        else:
            output[prefix] = value
    return output