paths.py 文件源码

def find_latest_file(top: str, pattern: Pattern) -> str:
    """Find latest file matching a pattern in each directory.

    Find latest file defined by a file pattern and natural sort
    for each directory and sub directory a file pattern match
    occurs.

    Parameters
    ----------
    top : base directory path
    pattern : regular expression to match file name pattern

    Yields
    ------
    full file paths matching pattern.

    """

    for root, dirs, files in os.walk(top):
        try:
            file_name = max(match_files(files, pattern), key=alphanum_key)

            yield os.path.join(root, file_name)
        except ValueError:
            pass