get_in.py

from typing import Any, List, Optional

def get_in(x: Any, ks: Optional[List[Any]], default: Any = None):
    """Recursively get nested values from dicts and lists in python.
    A better alternative to .get(...) chains and safe for index errors on lists.

    Example:
    >>> get_in({"foo": ["a", {"bar": "b"}]}, ["foo", 1, "bar"])
    "b"
    >>> get_in([1, 2], [7], default="foo")
    "foo"
    """
    if not ks:
        return x
    try:
        return get_in(x[ks[0]], ks[1:])
    except (KeyError, IndexError):
        return default