import os import glob os.chdir("/Users/mikeherman/repos/bugs/se-platform/se/core/permissions") for file in glob.glob("*.json"): file_name = os.path.splitext(file)[0] extension = os.path.splitext(file)[1] new_file_name = file_name[:-6] + extension try: os.rename(file, new_file_name) except OSError as e: print(e) else: print("Renamed {} to {}".format(file, new_file_name))