replace the file name.

rename.py

import os
from shutil import copyfile
from pathlib import Path

SOURCE_PATH = '.'
DEST_PATH = './re'

d_path = Path(DEST_PATH)
if not d_path.is_dir():
    os.makedirs(DEST_PATH)

files = os.listdir(SOURCE_PATH)

for file in files:
    print(file)
    copyfile(SOURCE_PATH+'/'+file, DEST_PATH+'/'+file.replace('-','_'))