Rename files with Python

rename.py

import os

def list_files(path):
    abs_path = os.path.abspath(path)

    files = []
    for name in os.listdir(abs_path):
        it_path = os.path.join(abs_path, name)
        if os.path.isfile(it_path):
            files.append(it_path)
    return files

file_path_list = list_files('.')

for file_path in file_path_list:
    if '.c.obj' not in file_path:
        continue
    
    filename = os.path.basename(file_path)
    dirname = os.path.dirname(file_path)
    filename_new = filename.replace('.c.obj', '.o')
    filename_new = 'BZE_' + filename_new
    os.rename(file_path, os.path.join(dirname, filename_new))