flat | Concatenative language interpreter written in C

def solution(roman_numerals_filename: str = "/p089_roman.txt") -> int:
    """
    Calculates and returns the answer to project euler problem 89.

    >>> solution("/numeralcleanup_test.txt")
    16
    """

    savings = 0

    file1 = o  

def all_solution_file_paths() -> list[pathlib.Path]:
    """Collects all the solution file path in the Project Euler directory"""
    solution_file_paths = []
    for problem_dir_path in PROJECT_EULER_DIR_PATH.iterdir():
        if problem_dir_pat  

def test_project_euler(solution_path: pathlib.Path) -> None:
    """Testing for all Project Euler solutions"""
    # problem_[extract this part] and pad it with zeroes for width 3
    problem_number: str = solution_path.parent.name[8:].zfill(3)