Bulk Rename Files from the Command Line with Python

This article explains how to rename multiple files from the command line using a simple Python script. The provided script uses the `os` and `sys` modules to iterate through files in a directory, adding a specified prefix to each filename. It also mentions a more advanced tool called Bulk Renamer Pro, which is built with Python 3 and has no external dependencies.

Bulk Rename Files from the Command Line with Python Renaming hundreds of files manually is tedious. Here is how to do it with a simple Python script. The Problem You have a folder full of photos and you need to add prefixes, change extensions, or convert case. Quick Solution python import os, sys def rename files directory, prefix="" : for f in os.listdir directory : fp = os.path.join directory, f if not os.path.isfile fp : continue name, ext = os.path.splitext f new path = os.path.join directory, prefix + name + ext print f"{f} - {os.path.basename new path }" if name == " main ": rename files sys.argv 1 , sys.argv 2 if len sys.argv 2 else "" python renamer.py ./photos vacation This adds a prefix to every file in the directory. Advanced Features The full CLI tool Bulk Renamer Pro adds: - Regex find-and-replace - Case conversion - Auto-numbering - Extension filtering - Recursive scanning - Safe dry-run mode Why CLI? - Fast: one command, hundreds of files - Repeatable: same result every time - Scriptable: chain with other commands Built with Python 3. No external dependencies.