from typing import List
from typing import Any


def flatten_list_of_lists(list_of_lists: List[List[Any]]) -> List[Any]:
    """
    Flatten a list of lists into a single list.

    Parameters
    ----------
    list_of_lists:
        List of lists.

    Returns
    -------
    flattened:
        Flattened list.
    """
    flattened = [x for y in list_of_lists for x in y]

    return flattened