from pathlib import Path

def get_path(filename) -> Path:
    this_dir = Path(__file__).resolve().parent
    project_dir = this_dir.parent
    return project_dir / filename

if __name__ == "__main__":
    filename = get_path("data/seq0.txt")
    print(filename)
    print(filename.resolve())
    print(filename.is_file())
    print(filename.exists())