import jsonpickle  # pip install jsonpickle
import json

def pprint_obj(obj, max_depth=None):
    """
    Pretty print all attributes of an object recursively.

    Arguments:
        obj (object): object whose attributes are to be printed
        max_depth (int, optional): maximum recursion depth
    """
    serialized = jsonpickle.encode(obj, max_depth=max_depth)
    return json.dumps(json.loads(serialized), indent=4)