Copy images from a list

import os
import shutil

allfiles = ['image1.png', 'image1.png']

src = 'root directory'
dest = 'folder on my desktop'

for dirpath, subdirs, files in os.walk(src):
    for file in files:
        try:
            shutil.copy(os.path.join(src, file), dest)
        except:
            print(file)