How to change folder names in python?

You can write it out fairly straight-forward, using os.listdir and the os.path functions:

import osbasedir = 'C:/Test'for fn in os.listdir(basedir):  if not os.path.isdir(os.path.join(basedir, fn)):    continue # Not a directory  if ',' in fn:    continue # Already in the correct form  if ' ' not in fn:    continue # Invalid format  firstname,_,surname = fn.rpartition(' ')  os.rename(os.path.join(basedir, fn),            os.path.join(basedir, surname + ', ' + firstname))

os.rename("Joe Blow", "Blow, Joe")

Seems to work fine for me. Which part are you having trouble with?

An alternative to os.rename is shutil.move(src, dest)

import shutilimport osshutil.move("M://source/folder", "M://destination/folder") os.rename("M://source/folder", "M://destination/folder")

Differences:

1. OS module might fail to move a file if the source and destination path is on different file systems or drive. But shutil.move will not fail in this kind of cases.

2. shutil.move checks if the source and destination path are on the same file system or not. But os.rename does not check, thus it fails sometimes.

3. After checking the source and destination path, if it is found that they are not in the same file system, shutil.move will copy the file first to the destination. Then it will delete the file from the source file. Thus we can say shutil.move is a smarter method to move a file in Python when the source and destination path are not on the same drive or file system.

4. shutil.move works on high-level functions, while os.rename works on lower-level functions.

I would also advise using pathlib to manipulate paths:

from shutil import movefrom pathlib import Pathbase_path = Path("C:/Test")for folder in base_path.iterdir():    if not folder.is_dir() or folder.name.startswith("."):        continue    name = folder.name    new_name = ", ".join(name.split(" "))    new_folder = folder.parent / new_name    move(folder, new_folder)