A simple script which allows to rename file by pattern and substitution.

rename.py

import glob
import argparse
import re
import os

parser = argparse.ArgumentParser(description='Rename some files.')
parser.add_argument('--pattern', type=str, default='')
parser.add_argument('--substitution', type=str, default='')
args = parser.parse_args()

pattern = re.compile(args.pattern)
files = glob.glob('**', recursive=True)
files = [filename for filename in files if pattern.match(str(filename)) ]

for filename in files:
    new_filename = pattern.sub(args.substitution, filename)
    print(filename, '->', new_filename)
    os.rename(filename, new_filename)

# ^(.*?)(-configmap)(.*?\.yaml)$/\1\3