Return latest or oldest file in directory (using pathlib)

from pathlib import Path # (glob import not required)

# can replace max for min for oldest file

def latest_file(dir_path: str, file_ext=".csv") -> Path:
    """returns most recent file
    arg 1: dir path, arg 2: file ext (default .csv)"""
    str_path = Path(dir_path).glob(f"*{file_ext}")
    latest_file = max(str_path, key=lambda item: item.stat().st_ctime)
    return latest_file