Copy files from multiple specific subfolders

Under the file path D:/src, I have images folders and its subfolders which have a regular structure as follows:

Folder A
- Subfolder a
- Subfolder b
- Subfolder c
Folder B
- Subfolder a
- Subfolder b
- Subfolder c
- Subfolder d
Folder C
- Subfolder a
- Subfolder b
- Subfolder c
...

I want to copy all .jpg files in Subfolder b from Folder A, B, C and so on to a new folder Subfolder b in D:/dst. How can I do it in Python? Thanks.

Subfolder b
-xxx.jpg
-xyx.jpg
-yxz.jpg
...

Here is what I have found from the following link may helps:

Copy certain files from one folder to another using python

import os;
import shutil;
import glob;

source="C:/Users/X/Pictures/test/Z.jpg"
dest="C:/Users/Public/Image"

    if os.path.exists(dest):
    print("this folder exit in this dir")
else:
    dir = os.mkdir(dest)

for file in glob._iglob(os.path.join(source),""):
    shutil.copy(file,dest)
    print("done")

Answer

Try this

import os
from os.path import join, isfile

BASE_PATH = 'd:/test'
SUBFOLDER = 'Subfolder b'

for folder, subfolders, *_ in os.walk(BASE_PATH):
    if SUBFOLDER in subfolders:
        full_path = join(BASE_PATH, folder, SUBFOLDER)
        files = [f for f in os.listdir(full_path) if isfile(join(full_path, f)) and f.lower().endswith(('.jpg', '.jpeg'))]
        for f in files:
            file_path = join(full_path, f)
            print (f'Copy {f} somewehere')