Python method to keep two folders in sync (in one direction)

sync_dirs.py

import os
from pathlib import Path
import shutil


# I needed a utilty on Windows to sync log files from a very slow network drive to a local drive
# for faster analysis. I'm not sure why Windows doesn't support this. This is pretty quick. I run
# just before analysis, and it grabs all the newer files and any that have changed.


def sync_dirs(src:Path, dst:Path) -> None:
    """Sync files from src to dst skipping files with same name, size, and modified time."""

    print(f"Sync Dirs:")
    print(f"\tSrc: {src.as_posix()}")
    print(f"\tDst: {dst.as_posix()}")

    def metadata_match(stat1:os.stat_result, stat2:os.stat_result) -> bool:
        # I'm on Windows, and it can't sync atime and ctime.
        return (stat1.st_size, stat1.st_mtime) == (stat2.st_size, stat2.st_mtime)

    # It is *so* much faster to use os.scandir(): https://stackoverflow.com/a/2485843/47078
    src_files = ((d.name, d.stat()) for d in os.scandir(src) if d.is_file())
    for name, stat in src_files:
        dest = dst.joinpath(name)
        if dest.exists() and metadata_match(stat, dest.stat()):
            continue
        print(f"\t{name}")
        shutil.copy2(src.joinpath(name), dest)

        
if __name__ == "__main__":
    src = Path('I:/slow/network/path')
    dst = Path('C:/fast/local/path')
    sync_dirs(src, dst)