$ python3
    Python 3.11.6 (main, Oct  2 2023, 20:46:14) [Clang 14.0.3 (clang-1403.0.22.14.1)] on darwin
    Type "help", "copyright", "credits" or "license" for more information.
    >>> from typing import List
    >>> def safe_navigation(obj, path: List[str], default=None):
    ...     try:
    ...         for key in path:
    ...             obj = obj[key]
    ...         return obj
    ...     except KeyError:
    ...         return default 
    ... 
    >>> obj = {1: {1: {1: 2}}}
    >>> safe_navigation(obj, [1,1,1])
    2
    >>> obj
    {1: {1: {1: 2}}}