Batch Renaming of Files in a Directory

Question

Is there an easy way to rename a group of files already contained in a directory, using Python?

Example: I have a directory full of *.doc files an

Answer 1

I prefer writing small one liners for each replace I have to do instead of making a more generic and complex code. E.g.:

This replaces all underscores with hyphens in any non-hidden file in the current directory

import os
[os.rename(f, f.replace('_', '-')) for f in os.listdir('.') if not f.startswith('.')]