您可以将os.walk与topdown=False一起使用：

import re
import os

top_dir = 'CC:/Users/xxx/College/Project1'

for dirpath, dirnames, filenames in os.walk(base_dir, topdown=False):
    for dirname in dirnames:
        if re.search(r'-\d{2}-', dirname):
            new_dirname = f"20{dirname.split('-', 1)[1]}"
            new_dirpath = os.path.join(dirpath, new_dirname)
            old_dirpath = os.path.join(dirpath, dirname)
            print(f'{old_dirpath} -> {new_dirpath}')
            os.rename(old_dirpath, new_dirpath)

之前：

Project1
└── fldr1
    ├── dsfshncrpout-13-lplce
    ├── fwefjkecmuon-12-cfecd
    ├── fwjekljfwelj-10-fwefw
    └── kljkgpjrjrel-11-wwref

之后：

Project1
└── fldr1
    ├── 2010-fwefw
    ├── 2011-wwref
    ├── 2012-cfecd
    └── 2013-lplce

让我们看看这是否适合你：

import os
import glob

# define the base folder
base_folder = "CC:/Users/xxx/College/Project1"

# get all the subfolders
subfolders = glob.glob(os.path.join(base_folder, "**/"), recursive=True)

# iterate over the subfolders
for folder_path in subfolders:
    # get the folder name
    folder_name = os.path.basename(folder_path)
    # split the folder name by the "-" character
    parts = folder_name.split("-")
    # construct the new folder name
    new_folder_name = "20" + parts[-1]
    # get the parent folder path
    parent_folder = os.path.dirname(folder_path)
    # construct the new folder path
    new_folder_path = os.path.join(parent_folder, new_folder_name)
    # rename the folder
    os.rename(folder_path, os.path.join(parent_folder, new_folder_path))